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 0x4755c522ccb800e37393d456b3d9f0fa0e38b5f58a62913cb264c6380a951262. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cec246ae-50d4-4c55-80b7-1bde9500a9dd.json and https://artists.proofprofile.net/proofs/artist/cec246ae-50d4-4c55-80b7-1bde9500a9dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Solar (Robin Guthrie Mix) - 2021 Remastered
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 0xe96c7f58c81646b70fe3fb5d7c2439a077c68620bc12a7bbd32612651b1b054e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PERA10800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25c3a818e27874f3314a85ea3278bfab9902599d0606054da45df6f0959cf02. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:08Z), 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/QM6P41738629.
Bocanada (Faraway Whispers from the Sea)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf31436201d9d72f159f86dab14bbbee26a6d23d47fb3a75443be8dca72b090. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:53Z), 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/ES71G2134557.