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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e1939e6f5da9673aa49ee0abd17f7461fb43921608f3b382ac5b928faaaf3f. 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/032232f7-d0bf-4e14-85e6-2fdb90e1493c.json and https://artists.proofprofile.net/proofs/artist/032232f7-d0bf-4e14-85e6-2fdb90e1493c.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c7ced554adad30ade8bd832763c1ce88dc78466cd77c508b884fd0c97a5128. 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/DEGE92100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123e33022302e2ab60ccef4c0af50b3c9fc529af82d98c3593f563f8e1b86767. 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/FRUM71402494.
Relax - A Decade 2003-2013 Remixed & Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91327ad597870ec255132c51eb7ce5d9b35ec3c00c30a4da03e44d4945f7b52. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEGE91300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b26a22c7c92356243f334f6d51d09720fd68dca0835a6e2ca62fc00dc6268e. 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/FR13Z1000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba2129c21b4d61fa66c6a5b0c1aba553576ccfab67a5ac8e9706090e86e56a1. 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/DEGE91300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce5bd104a32bef1bbd52d3d1592b9513379be27c5b4d3ece552bb025b6954e. 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/DEGE91300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e08e1b13115085cd10c4cacfee69da219d201dbecd2f0e77cdb9f1ada3ac0c. 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/TCACN1680898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c7ced554adad30ade8bd832763c1ce88dc78466cd77c508b884fd0c97a5128. 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/DEGE92100054.
C'est Pas La Mer a Boire - Dalholt Ambient Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eef80d6c1c82becfccf631f844ebafc313a8c86c1c20fec239940f31d1d5a1d. 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/DEGE92100013.
Surround Me with Your Love - Ben Macklin Remix
Surround Me with Your Love (Ben Macklin Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18cbecc961fbdc6655d46e51bdaae841b3ade469f1aab445d08b91004b82d50. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGE92300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a87fd9dbca4c8491ce92ad1f14c03ecd3b7eeeaa8751e011b12d04ca904d0e7. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEGE92000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c7ced554adad30ade8bd832763c1ce88dc78466cd77c508b884fd0c97a5128. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEGE92100054.
C'est Pas La Mer à Boire - Dalholt & Langkilde Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325fdd96824cc9f085d56572d74f880071b361ef81f3bb9088b8e902980d4372. 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/DEGE92000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325fdd96824cc9f085d56572d74f880071b361ef81f3bb9088b8e902980d4372. 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/DEGE92000059.
C'est Pas La Mer à Boire - Dalholt Ambient Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eef80d6c1c82becfccf631f844ebafc313a8c86c1c20fec239940f31d1d5a1d. 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/DEGE92100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcd41413cc33768dc5dfdccba5c68d0d0ceea3e3acf1983f771c881b78812e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEGE92000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463b05937291778ed8055ebff16f8f07e51233705b748805b60117b9f56164c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGE91300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704fe508d8fe9f893e2b0aee3016777a981ed4d7187189f59d0df74718eec8f9. 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/DEGE91000001.