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 0x5e7070ce322d442a06e2e2b8cb666198ad0697bdc3bad0bffe9c6891089b5752. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d074285f-4e44-4bbd-aed2-af617ff74538.json and https://artists.proofprofile.net/proofs/artist/d074285f-4e44-4bbd-aed2-af617ff74538.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Synopsis One: In The Ghetto / God Save The World
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 0x2ac796d7f0aae26a9ce000b84706252e12dce85120cda3201337c3437d6a7ca8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USC4R1706130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b10344ed8ead245c3650b947c81aef66dfebcd300fac3aa64b1cee1eb2e9e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:20Z), 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/USC4R1706132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac2f48c51f859877de1b4756c5c274504508f8c7cfbc90e67b4d0d96ed800ba. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:33:31Z), 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/USC4R1706133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf161042726b2de5eca369c276c674bfdb69caadc3688699136a5057eb141b933. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USC4R1706134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ab48985ac70e811a7805fe45579fdad90ec90f8933a48acaba890228ee627. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCW60902502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee4a716b7b9e68669aa9489a674efe31e9bc4bf115cc91d078f6d02d56d4e9a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCW61910407.