{"copyright_id":"0xde0693f7ddfb7c20e2ce0ef3dd0bd266ac0680abdca42ae20906ce327a6ba0ff","name":"Hisham Eldady","registered_at":"2026-06-20T23:40:45Z","symbol":"NIM1750907","token_address":"0x504ed59cf57c8d5f69aace6fff72f188d8f069b4","type":"artist","uuid":"cc3c360e-ed49-41cf-8f0e-b22deb13e2ec"}
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 0xde0693f7ddfb7c20e2ce0ef3dd0bd266ac0680abdca42ae20906ce327a6ba0ff. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc3c360e-ed49-41cf-8f0e-b22deb13e2ec.json and https://artists.proofprofile.net/proofs/artist/cc3c360e-ed49-41cf-8f0e-b22deb13e2ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).