A blockchain storage method and system for waste recycling scenarios

Abstract

The application discloses a kind of blockchain storage methods and systems for waste recycling scene, it is related to electronic data storage field, including the following steps: pre-calibration waste recycling transaction whole process in key evidence node, configure the trigger condition and evidence collection rule of each node;When key evidence node triggers, automatically collect multi-source evidence data and carry out pre-processing, form standardization evidence package;Multi-party signature consensus verification is executed to the evidence package.The application realizes evidence online verification, one-key judicial certification and cross-chain mutual recognition, greatly simplifies the process of evidence collection and certification, reduces the cost of rights protection, shortens the judicial identification period, significantly improves the judicial acceptance rate of storage evidence and dispute handling efficiency, ultimately enhances the credibility of waste recycling platform comprehensively, promotes the high-quality development of industry in the direction of credibility, standardization and digitization.

Description

Technical Field

[0001] This invention relates to the field of electronic data storage technology, and more specifically, to a blockchain-based data storage method and system for waste recycling scenarios. Background Technology

[0002] In the urban recyclable resource recovery system, waste recycling transactions involve multiple parties, including users, recyclers, recycling stations, and operating platforms. The transaction chain is long, the stages are fragmented, the frequency is high, and the average transaction amount is generally low, making it highly susceptible to various transaction disputes. Common disputes include: users claiming they haven't received full payment; recyclers claiming they haven't received the agreed-upon type and weight of waste; waste being lost or damaged during the pick-up and transfer process; disputes over on-site weighing and settlement prices; and lost transaction receipts making it impossible to provide evidence.

[0003] The mainstream evidence preservation methods in the industry currently include:

[0004] 1. Centralized Platform Log Storage: Transaction data, payment records, and tracking information are stored in a centralized database on the platform. This model involves unilateral data control, which carries the risk of tampering, deletion, or loss. In case of disputes, the evidence lacks credibility and is difficult to accept by the judiciary. Furthermore, data is easily permanently lost if the server is attacked or experiences hardware failure.

[0005] 2. Traditional notarized evidence preservation: Photos and videos of the transaction are taken and submitted to a notary office for notarization. This method is cumbersome, has high labor costs, and is time-consuming. It cannot cover the massive number of high-frequency, small-amount recycling transactions and lacks the capability for large-scale application.

[0006] 3. Single-point timestamp evidence: Only adding a timestamp to the data file can prove the time when the data was generated, but it cannot verify the authenticity of the data source or the credibility of the uploader's identity, and there is a risk of forging data and adding timestamps.

[0007] 4. Paper-based evidence: Handwritten receipts, weighing slips, and other paper documents are used. These are easily lost, damaged, or forged; the handwriting is often illegible and the information is incomplete, making them unsuitable as valid judicial evidence.

[0008] 5. Post-event judicial appraisal: After a dispute enters litigation, a judicial appraisal institution is commissioned to appraise the electronic data. This process is lengthy and expensive. For small transactions, the cost of protecting one's rights far exceeds the amount in dispute, causing users to abandon their rights and making it difficult to effectively resolve industry disputes. Summary of the Invention

[0009] To address the problems in related technologies, this invention proposes a blockchain-based evidence storage method and system for waste recycling scenarios. This system enables real-time solidification, immutability, multi-party consensus, low cost, and judicial verification of evidence throughout the entire transaction process. It solves the problems of difficulty in providing evidence, acceptance of evidence, and rights protection in transaction disputes, thereby improving transaction credibility and industry standardization.

[0010] The technical solution of this invention is implemented as follows:

[0011] A blockchain-based evidence storage method and system for waste recycling scenarios includes the following steps:

[0012] Pre-identify key evidence nodes in the entire waste recycling transaction process, and configure the triggering conditions and evidence collection rules for each node;

[0013] When key evidence nodes are triggered, multi-source evidence data is automatically collected and preprocessed to form a standardized evidence package;

[0014] The evidence package undergoes multi-party signature consensus verification, and only after the signature rules are met can it proceed to the evidence storage process.

[0015] It adopts a two-layer storage architecture of storing hashes on-chain and storing original texts off-chain. Evidence hashes and metadata are stored on-chain, while the original evidence is encrypted and stored off-chain.

[0016] Used to provide online verification of evidence and connect with judicial institutions to achieve one-click judicial certification;

[0017] The evidence storage data is encrypted, subject to hierarchical access control, and desensitized for privacy.

[0018] The key evidence nodes include at least: order placement node, order acceptance node, on-site delivery node, weighing node, payment node, and completion node;

[0019] The process is as follows: Order placement is triggered when the user submits an order, collecting the order ID, user ID, type of waste, estimated weight, user address, and order time; Order acceptance is triggered when the recycler accepts the order, collecting the recycler ID, acceptance time, and real-time GPS location of the recycler; On-site delivery is triggered when the recycler arrives at the user's address, collecting the delivery time, GPS location, and a photo of the user and recycler; Weighing is triggered when the actual weight is entered, collecting weighing photos / videos, actual weight, weighing time, and weighing device ID; Payment is triggered when the platform completes payment, collecting the payment amount, payment time, payment transaction number, and receiving account; and Completion is triggered when the user confirms the transaction, collecting user feedback and transaction completion time.

[0020] The multi-source evidence data includes: structured data obtained from the business database, unstructured data collected through terminal devices, and environmental auxiliary data obtained from third-party APIs; the preprocessing includes: data cleaning and redundancy removal, standardized compression of image / video formats, and adding collection device information, APP version number, and network environment metadata to the evidence package.

[0021] The multi-party signature consensus verification includes the following steps:

[0022] The user's private key signature is generated by the user's client, the recycler's private key signature is generated by the recycler's client, and the platform's private key signature is generated by the platform server.

[0023] Key evidence nodes must meet the requirement that at least two parties' signatures are valid for the verification process to proceed to the evidence storage stage;

[0024] The order placement node requires both user and platform signatures; the door-to-door delivery node requires both user and recycler signatures; the weighing node requires both recycler and platform signatures; and the payment node is automatically signed by the platform.

[0025] The dual-layer storage architecture includes:

[0026] After encrypting the evidence package using a symmetric encryption algorithm, it is uploaded to IPFS distributed storage or high-availability cloud storage, and a unique storage address is obtained as off-chain storage.

[0027] Calculate the hash value of the evidence package, construct a notarization transaction containing node identifier, timestamp, evidence hash, storage address, and multi-party signatures, broadcast it on the chain and write it into a block as on-chain notarization.

[0028] The online verification includes a third party uploading evidence hashes or credentials, comparing them with on-chain data in real time through a public verification portal, and outputting the authenticity verification result.

[0029] Another aspect of the present invention:

[0030] A blockchain-based evidence storage system for waste recycling scenarios, comprising the system used in the aforementioned blockchain-based evidence storage method for waste recycling scenarios, including:

[0031] The key node definition module is used to configure key evidence nodes, triggering conditions, and evidence collection rules throughout the entire transaction process;

[0032] The multi-source data acquisition and preprocessing module is used to automatically collect structured data, unstructured data, and environmental data, and to complete cleaning, standardization, and metadata addition.

[0033] The multi-party signature consensus module is used to generate private key signatures for users, recyclers, and the platform, and to verify the validity of the signatures according to the rules.

[0034] The dual-layer storage and evidence preservation module is used for off-chain encrypted storage of original evidence and on-chain storage of evidence hashes and metadata, generating and issuing evidence preservation certificates.

[0035] The judicial verification and certification module is used to provide an online verification portal, connect with judicial institutions, generate judicial certification documents, and achieve cross-chain mutual recognition of court evidence platforms.

[0036] The privacy and access control module is used for encrypted data storage, hierarchical access control, and anonymization of user privacy information.

[0037] Furthermore, the dual-layer storage and evidence preservation module is further configured to: encrypt the evidence package and upload it to IPFS or cloud storage, calculate the evidence hash and construct an evidence preservation transaction on the blockchain, record the transaction hash and block height, and generate an evidence preservation certificate containing a verification QR code and push it to the user terminal and the recycler terminal.

[0038] Furthermore, the judicial verification and certification module allows judges, arbitrators, and parties to verify in real time that evidence has not been tampered with through evidence hashes or verification QR codes; and supports online application for and acquisition of legally valid electronic notarized documents and judicial appraisal reports, which can be directly used in litigation and arbitration proceedings.

[0039] The beneficial effects of this invention are:

[0040] This invention fundamentally solves the core pain points of traditional waste recycling scenarios, such as high evidence storage costs, susceptibility to evidence tampering, weak probative value, difficulty in judicial acceptance, and cumbersome rights protection procedures, by constructing an integrated technical system for node-based evidence storage throughout the entire waste recycling transaction process, multi-party signature consensus, on-chain and off-chain dual-layer storage, and direct judicial certification. This invention automatically collects and solidifies evidence in real time at key nodes throughout the transaction lifecycle, forming a complete and inseparable chain of evidence, effectively improving the traceability of the transaction process. By introducing a multi-party signature consensus mechanism involving users, recyclers, and the platform, it strictly requires key evidence to be confirmed by at least two parties before being uploaded to the chain, eliminating unilateral forgery and data tampering from the source, significantly enhancing the authenticity and credibility of the evidence. Adopting a dual-layer storage architecture of "on-chain hash storage and off-chain original text storage," it significantly reduces the storage cost and network consumption of blockchain evidence storage while ensuring data immutability and independent verification, making full-scale evidence storage for massive small-value recycling transactions economically feasible and... The invention offers significant value for large-scale deployment. Through encrypted storage, tiered access control, and privacy-desensitizing processing, it achieves both public verifiability and strict protection of user personal information, meeting relevant data security and personal information protection regulations. Furthermore, it establishes connections with judicial appraisal institutions, notary offices, and court electronic evidence platforms, enabling online evidence verification, one-click judicial certification, and cross-chain mutual recognition. This significantly simplifies evidence collection and certification processes, reduces rights protection costs, shortens judicial recognition cycles, and substantially improves the judicial acceptance rate of stored evidence and the efficiency of dispute resolution. Ultimately, it comprehensively enhances the credibility of waste recycling platforms and promotes the industry's high-quality development towards trustworthiness, standardization, and digitalization. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a flowchart illustrating a blockchain-based evidence storage method and system for waste recycling scenarios according to an embodiment of the present invention. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0044] According to an embodiment of the present invention, a blockchain-based evidence storage method for waste recycling scenarios is provided.

[0045] like Figure 1 As shown, the blockchain-based evidence storage method for waste recycling scenarios according to an embodiment of the present invention includes the following steps:

[0046] Step S1: Define the key evidence nodes in the entire waste recycling transaction process and configure the triggering conditions and evidence collection rules for each node;

[0047] In this technical solution, the system pre-configures multiple core evidence nodes, clearly defining the triggering conditions and the content to be collected, as detailed below:

[0048] Order Node (N1): Triggered by user order submission, collecting order ID, user ID, waste type, estimated weight, user address, and order time.

[0049] Order Acceptance Node (N2): Triggered by the recycling worker accepting an order, collecting the recycling worker ID, order acceptance time, and real-time GPS location.

[0050] On-site node (N3): The recycler arrives at the destination and confirms the trigger, collecting the on-site time, GPS location, and a photo of the user and the recycler on site.

[0051] Weighing Node (N4): Triggered by the input of actual weighing data, it collects weighing photos / videos, actual weight, weighing time, and the unique identifier of the weighing equipment.

[0052] Payment Node (N5): The platform completes the payment trigger and collects the payment amount, payment time, payment serial number, and receiving account information.

[0053] Completed Node (N6): Triggered by user confirmation of transaction completion, collecting user feedback and transaction completion time.

[0054] Step S2: When a key evidence node is triggered, multi-source evidence data is automatically collected and preprocessed to form a standardized evidence package;

[0055] Specifically, data collection includes: structured data, such as order information, user information, recycling worker information, timestamps, and GPS coordinates, which are automatically obtained from the business database; unstructured data, such as photos and videos collected by calling the camera and location functions through the user / recycler's APP; and environmental auxiliary data, such as on-site weather and network status information obtained through third-party APIs.

[0056] Meanwhile, the collected data is cleaned to remove redundant fields and retain core evidentiary elements; the format is standardized, such as uniformly compressing images and extracting key frames from videos to control file size; metadata is added to record the collection device number, APP version, network environment, and collection time to enhance the integrity of the evidence.

[0057] Step S3: Perform multi-party signature consensus verification on the evidence package. Only after the preset signature rules are met can the evidence storage process begin.

[0058] This technical solution allocates asymmetric key pairs to users, recyclers, and the platform, and generates private key signatures for each: Sig_user, Sig_recycler, and Sig_platform.

[0059] The signature verification rules are as follows:

[0060] The order placement node consists of user signature and platform signature;

[0061] On-site node, namely user signature and recycler signature;

[0062] The weighing node consists of the recycler's signature and the platform's signature;

[0063] Payment node, i.e., platform automatic signature;

[0064] The system verifies the validity of signatures in real time, and only evidence packages that pass the verification enter the evidence storage process.

[0065] Step S4 adopts a two-layer storage architecture of "storing hash on-chain and storing original text off-chain". The evidence hash value and key metadata are stored on the chain, while the original evidence is encrypted and stored in an off-chain distributed / cloud storage system.

[0066] Among them, off-chain storage includes evidence packages that are encrypted with AES-256 symmetric encryption and uploaded to IPFS distributed storage or high-availability cloud storage to obtain a unique storage address StorageAddr;

[0067] On-chain evidence storage includes calculating the hash value H = Hash(Data) of the evidence package and constructing the evidence storage transaction structure, represented as follows:

[0068] Tx=[NodeID,Timestamp,H,StorageAddr,Sig_user,Sig_recycler,Sig_platform]

[0069] Broadcast the transaction to the blockchain, write it into a block, and record the TxHash and BlockHeight.

[0070] This process generates a certificate of evidence, which includes the evidence name, evidence storage time, transaction hash, block height, evidence hash, and verification QR code, and pushes it to the user and the recycling terminal.

[0071] Step S5 provides an online verification portal for public evidence and connects with judicial appraisal institutions, notary offices, and court electronic evidence platforms to achieve one-click judicial certification and cross-chain mutual recognition of evidence;

[0072] This technical solution features online verification, where users, judges, and arbitrators can upload hash values ​​or scan QR codes through the verification page. The system automatically compares the data with on-chain data and returns a result of "authentic and unaltered" or "verification failed." For judicial certification, users can apply with one click through the app. The system automatically packages the on-chain evidence records, the original off-chain documents, and multi-party signature information, and transmits them via dedicated line to cooperating judicial appraisal / notary institutions to generate electronic judicial appraisal reports or notarized documents. Simultaneously, it connects with the electronic evidence platforms of internet courts and local courts to achieve cross-chain mutual recognition of evidence, allowing judges to directly retrieve and verify it.

[0073] Step S6 involves implementing encrypted storage, hierarchical access control, and desensitization of user privacy information for all data in the evidence preservation process.

[0074] Specifically, regarding encrypted storage, the off-chain evidence is encrypted, with the keys held separately by the user and the platform, requiring collaboration between both parties for decryption; users can only view their own transaction records; the platform can access necessary information with authorization; judicial authorities can retrieve evidence through a dedicated channel after identity verification; in addition, only hash values ​​and encrypted storage addresses are stored on the blockchain, without exposing sensitive information such as names, phone numbers, and precise addresses.

[0075] According to an embodiment of the present invention, a blockchain-based evidence storage system for waste recycling scenarios is provided.

[0076] According to an embodiment of the present invention, a blockchain-based evidence storage system for waste recycling scenarios, comprising the system for the aforementioned blockchain-based evidence storage method for waste recycling scenarios, includes:

[0077] The key node definition module is used to configure key evidence nodes, triggering conditions, and evidence collection rules throughout the entire transaction process;

[0078] The multi-source data acquisition and preprocessing module is used to automatically collect structured data, unstructured data, and environmental data, and to complete cleaning, standardization, and metadata addition.

[0079] The multi-party signature consensus module is used to generate private key signatures for users, recyclers, and the platform, and to verify the validity of the signatures according to the rules.

[0080] The dual-layer storage and evidence preservation module is used for off-chain encrypted storage of original evidence and on-chain storage of evidence hashes and metadata, generating and issuing evidence preservation certificates.

[0081] The judicial verification and certification module is used to provide an online verification portal, connect with judicial institutions, generate judicial certification documents, and achieve cross-chain mutual recognition of court evidence platforms.

[0082] The privacy and access control module is used for encrypted data storage, hierarchical access control, and anonymization of user privacy information.

[0083] The dual-layer storage and evidence preservation module is further configured to: encrypt the evidence package and upload it to IPFS or cloud storage, calculate the evidence hash and construct an evidence preservation transaction on the blockchain, record the transaction hash and block height, and generate an evidence preservation certificate containing a verification QR code and push it to the user terminal and the recycler terminal.

[0084] The judicial verification and certification module allows judges, arbitrators, and parties to verify in real time that evidence has not been tampered with through evidence hashes or verification QR codes; it also supports online application for and acquisition of legally valid electronic notarized documents and judicial appraisal reports, which can be directly used in litigation and arbitration proceedings.

[0085] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Those skilled in the art, upon considering the disclosure in the specification and embodiments, will readily conceive of other embodiments of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0086] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A blockchain-based evidence storage method for waste recycling scenarios, characterized in that, Includes the following steps: Pre-identify key evidence nodes in the entire waste recycling transaction process, and configure the triggering conditions and evidence collection rules for each node; When key evidence nodes are triggered, multi-source evidence data is automatically collected and preprocessed to form a standardized evidence package; The evidence package undergoes multi-party signature consensus verification, and only after the signature rules are met can it proceed to the evidence storage process. It adopts a two-layer storage architecture of storing hashes on-chain and storing original texts off-chain. Evidence hashes and metadata are stored on-chain, while the original evidence is encrypted and stored off-chain. Used to provide online verification of evidence and connect with judicial institutions to achieve one-click judicial certification; The evidence storage data is encrypted, subject to hierarchical access control, and desensitized for privacy.

2. The blockchain-based evidence storage method for waste recycling scenarios according to claim 1, characterized in that, The key evidence nodes include at least: order placement node, order acceptance node, on-site delivery node, weighing node, payment node, and completion node; The process is as follows: Order placement is triggered when the user submits an order, collecting the order ID, user ID, type of waste, estimated weight, user address, and order time; Order acceptance is triggered when the recycler accepts the order, collecting the recycler ID, acceptance time, and real-time GPS location of the recycler; On-site delivery is triggered when the recycler arrives at the user's address, collecting the delivery time, GPS location, and a photo of the user and recycler; Weighing is triggered when the actual weight is entered, collecting weighing photos / videos, actual weight, weighing time, and weighing device ID; Payment is triggered when the platform completes payment, collecting the payment amount, payment time, payment transaction number, and receiving account; and Completion is triggered when the user confirms the transaction, collecting user feedback and transaction completion time.

3. The blockchain-based evidence storage method for waste recycling scenarios according to claim 1, characterized in that, Multi-source evidence data includes: structured data obtained from business databases, unstructured data collected through terminal devices, and environmental auxiliary data obtained from third-party APIs; the preprocessing includes: data cleaning and redundancy removal, standardized compression of image / video formats, and adding collection device information, APP version number, and network environment metadata to the evidence package.

4. The blockchain-based evidence storage method for waste recycling scenarios according to claim 1, characterized in that, The multi-party signature consensus verification includes the following steps: The user's private key signature is generated by the user's client, the recycler's private key signature is generated by the recycler's client, and the platform's private key signature is generated by the platform server. Key evidence nodes must meet the requirement that at least two parties' signatures are valid for the verification process to proceed to the evidence storage stage; The order placement node requires both user and platform signatures; the door-to-door delivery node requires both user and recycler signatures; the weighing node requires both recycler and platform signatures; and the payment node is automatically signed by the platform.

5. The blockchain-based evidence storage method for waste recycling scenarios according to claim 1, characterized in that, The dual-layer storage architecture includes: After encrypting the evidence package using a symmetric encryption algorithm, it is uploaded to IPFS distributed storage or high-availability cloud storage, and a unique storage address is obtained as off-chain storage. Calculate the hash value of the evidence package, construct a notarization transaction containing node identifier, timestamp, evidence hash, storage address, and multi-party signatures, broadcast it on the chain and write it into a block as on-chain notarization.

6. The blockchain-based evidence storage method for waste recycling scenarios according to claim 1, characterized in that, The online verification includes a third party uploading evidence hashes or credentials, comparing them with on-chain data in real time through a public verification portal, and outputting the authenticity verification result.

7. A blockchain-based evidence storage system for waste recycling scenarios, a system for the blockchain-based evidence storage method for waste recycling scenarios as described in any one of claims 1-6, characterized in that, include: The key node definition module is used to configure key evidence nodes, triggering conditions, and evidence collection rules throughout the entire transaction process; The multi-source data acquisition and preprocessing module is used to automatically collect structured data, unstructured data, and environmental data, and to complete cleaning, standardization, and metadata addition. The multi-party signature consensus module is used to generate private key signatures for users, recyclers, and the platform, and to verify the validity of the signatures according to the rules. The dual-layer storage and evidence preservation module is used for off-chain encrypted storage of original evidence and on-chain storage of evidence hashes and metadata, generating and issuing evidence preservation certificates. The judicial verification and certification module is used to provide an online verification portal, connect with judicial institutions, generate judicial certification documents, and achieve cross-chain mutual recognition of court evidence platforms. The privacy and access control module is used for encrypted data storage, hierarchical access control, and anonymization of user privacy information.

8. The blockchain-based evidence storage system for waste recycling scenarios according to claim 7, characterized in that, The dual-layer storage and evidence preservation module is further configured to: encrypt the evidence package and upload it to IPFS or cloud storage, calculate the evidence hash and construct an evidence preservation transaction on the blockchain, record the transaction hash and block height, and generate an evidence preservation certificate containing a verification QR code and push it to the user terminal and the recycler terminal.

9. The blockchain-based evidence storage system for waste recycling scenarios according to claim 7, characterized in that, The judicial verification and certification module allows judges, arbitrators, and parties to verify in real time that evidence has not been tampered with through evidence hashes or verification QR codes; it also supports online application for and acquisition of legally valid electronic notarized documents and judicial appraisal reports, which can be directly used in litigation and arbitration proceedings.

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