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 0x715f1113c8a9ddc18c9b85a0be102d32a713fb93ab3a0e7273a62cc1aa22b1bb. 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/d7b7cdd5-9326-4dfe-bbae-4fd01a032808.json and https://artists.proofprofile.net/proofs/artist/d7b7cdd5-9326-4dfe-bbae-4fd01a032808.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All About That Bass (originally by Meghan Trainor)
Break Free (originally by Ariana Grande ft. Zedd)
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 0x8a6060c455f75b6368e7033ca505c2ad438b4b6faa6872a4f4812507662d1145. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGL2204898.
YET (feat. Ashley Hess & the King will come)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7838b09a00d9ebdc2dd8238bd96e2b113d259cf3e448291e50f9d274167c972. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2322359.
YET (feat. Ashley Hess & the King will come) - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c66de31f941664b9aa88b3dcad0f973c711dc66cbadf28a1dd662e05dbbcfac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFMF2302442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7838b09a00d9ebdc2dd8238bd96e2b113d259cf3e448291e50f9d274167c972. 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/QMFME2322359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a88282be049146ca346655b402dadc15d78ecdfc2e7a89c1cd05fe78c71199. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM7MR2000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7838b09a00d9ebdc2dd8238bd96e2b113d259cf3e448291e50f9d274167c972. 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/QMFME2322359.