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 0x59f3b4e9caee50ad85d71e1a32ddfd4963158b6233a1edfefa7e792e2901ee99. 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/b7df4c33-9004-447b-983f-f09c0e264783.json and https://artists.proofprofile.net/proofs/artist/b7df4c33-9004-447b-983f-f09c0e264783.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Hidden Life (Original Motion Picture Soundtrack)
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 0x82fa9e52fa0c3beb235b539efc1c984a694316e480d4be72b73f85b77af1583b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USFM91900738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f48d90f8fa02535706ac8265e50aac977b822a9fedac2baae1dd684e60bd903. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USFM91900739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c87b0ab66cdafdc92bf6ce169304b830610a061e4eaa78eac7cf367e962a7fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USFM91900740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb3ec08562f1e18873d4ee9af571863fa55d21c4fda2b9f91693e32671b78a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USFM91900743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1c45a70ce90217165bfbaf938e1cf5b18c6b3cfb2a6b90a8ba7a30149d19e6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USFM91900744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876f22a451773fe09c2ba02a66808a69b67a2b9ddde8cf1291aa43b6556a1510. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USFM91900745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221d299cb43c7190259259a703217025887ee48ed5c10c02eba46a073677c18c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USFM91900746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e24fed3b4d94ccd62bb636ede4f718aa19cbf6695b5cc7e2d6680d32889d900. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USFM91900747.