{"copyright_id":"0x9f91fdb536400dc4991feaface8f63db4ac3db9b4978ce12bedb1b8acc60bcff","name":"The Swamp Stomp String Band","registered_at":"2026-06-16T15:45:51Z","symbol":"NIM1099169","token_address":"0xbb308118f2e81f529dee44f62274ce5da46c321c","type":"artist","uuid":"4b3dbb56-d462-4235-a23f-fcb4ae627241"}
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 0x9f91fdb536400dc4991feaface8f63db4ac3db9b4978ce12bedb1b8acc60bcff. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b3dbb56-d462-4235-a23f-fcb4ae627241.json and https://artists.proofprofile.net/proofs/artist/4b3dbb56-d462-4235-a23f-fcb4ae627241.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).