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 0x6cb4391c397eee68d73032f5e1464b25f0cdab18eef94c72d6dc33e7af76c62a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/982b2ad0-f495-4aa1-a413-eff8e23f8c15.json and https://artists.proofprofile.net/proofs/artist/982b2ad0-f495-4aa1-a413-eff8e23f8c15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x6f09b682faadfdcad924d9b2d6bc163e180f58c8f5d8c05b21564d6b9842c4c5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:55Z), 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/USUYG1051082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ab9030b4e675eafe356807391dd392ec99908a532ad25cb7b4b1ed02fe1b9c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USUYG1051084.
P.Y.I.T.F. (feat. Gawvi, Spzrkt, Rey King & Social Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a088a8b6035b185f55cb8e55284d0ddd9799a177b65ddddad5aa44b0fcf3bcf. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCABQ1394041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae601ad529eaf839b9f1e331b022314d38c4922cc80f8d4a3ef6b1005b9ca2d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMTND1100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6628a3ff3bcec108f57b7451ce0286e7e82ac14263c6960900485e113f815598. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCABP1350843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb806454d037c35a9a3380f5fe5a2a3371b305f70ffe7aa6738858e6f1f7fc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCABM1382824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e83f7f787bf458290ff101d57847d470e92624b19d5ca7b6dae0d48e57f0e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMTND1100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e83f7f787bf458290ff101d57847d470e92624b19d5ca7b6dae0d48e57f0e. 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/QMTND1100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec9009b689243509ddda73e835c25b7e43c53c8128262e711201e1a6ba0b678. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:05:57Z), 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/GBXFH1500006.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Keep You Around (feat. Spzrkt & Marty Mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbb8625a1f47ccb130fb286a2cbb7e1d60b37ed07344128c7813bfd76ab15c9. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCABQ1394031.