End-to-end encrypted evidence platform based on blockchain, providing immutable timestamp proof for your important files
End-to-End Encryption
Private key protection
Blockchain Evidence
Immutable records
Verify authenticity and integrity of any evidence record without connecting wallet
Drag file here, or click to select
Any file format supported, hash calculated locally without upload
End-to-End Encryption × IPFS Distributed Storage × Blockchain Immutability
Files are encrypted locally using your wallet private key, ensuring only you can decrypt and view the original content, achieving true privacy protection.
Encrypted files are stored in the IPFS distributed network, ensuring data persistence, accessibility, and censorship resistance.
File fingerprints and IPFS addresses are permanently recorded on blockchain, providing immutable timestamp proof and public verification capability.
All your questions about blockchain evidence, answered in detail
Blockchain evidence records a file's digital fingerprint (hash) on the blockchain, using blockchain's immutability to prove the existence and integrity of the file at a specific point in time. This technology provides legally recognized timestamp proof for digital files.
Absolutely not. We use end-to-end encryption technology. Your files are encrypted locally using your wallet private key, and only you can decrypt and view the original content. The blockchain only records the file's digital fingerprint, not any actual file content.
You can use our "Public Verification" feature without connecting a wallet. Simply enter the transaction hash or file link provided by the other party, and the system will retrieve public metadata from the blockchain, including file fingerprint and evidence time, for your independent verification.
Evidence creation requires a small blockchain transaction fee (Gas fee), the specific amount depends on current network congestion. We do not charge additional service fees, all fees are transparent blockchain network fees.
Evidence records on blockchain are permanent and cannot be deleted, which is the core advantage of blockchain technology. However, encrypted file content is stored on IPFS, and if you no longer need it, you can choose not to maintain the IPFS node, but the evidence record on blockchain will be permanently preserved.