SVN or svn may refer to: Businesses and organizations 7 Days Inn (former NYSE ticker symbol), a Chinese budget hotel chain CoogTV, formerly Student Video Network, a student-operated television stat
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928a2590799e79555d15393f37c2c904210c7bd1c6f31ff5172d24c520fb1834. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91b7c914-a6d0-4657-9a0a-55ad3fb65e8c.json and https://artists.proofprofile.net/proofs/artist/91b7c914-a6d0-4657-9a0a-55ad3fb65e8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).