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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab493867a77be8eebfe1eee7bb7af30c1e0b2d74c9328c36c35272773589bbbd. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f5a7b8e-cc1b-4fcb-8169-dde51817f8eb.json and https://artists.proofprofile.net/proofs/artist/2f5a7b8e-cc1b-4fcb-8169-dde51817f8eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Godspell (Original Off-Broadway Cast Recording)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aabd0beed52c4ae1d7f771a92d107d309e06a8a81ca0f63415e598c503cd75. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAR10401035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c771faf4e5adc9315052dca9525e59adf94076dff227e0139c4c0717732cea. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:31:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAR10401034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0079c162c724caaaecccc28fe4add3945d151c79487f160213dc7844f17c2e48. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAR10401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43ec6659512d8e34e210e0ba9c8b42fa0d41108c725ab53fc74475bb8c9f73b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAR10401037.