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 0x1394323474ec0dc45f6c170bfc56c882f7938d8585acc7ac44115f10d7eb4977. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d125438-1ec4-49ba-b6e8-9b9fe7d1ed6e.json and https://artists.proofprofile.net/proofs/artist/3d125438-1ec4-49ba-b6e8-9b9fe7d1ed6e.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 0x5fac32d38f031fcd1ab19378b248afd4a24f1182ab5768adff205bc89905577c. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:19:20Z), 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/CH8191001627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9798a881e8cf9c2b9f82019fa8d78e4f1cea4d3de5927090cc337289a968f20c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CH8191001739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc647cc9d4f512e8e69e3d5d5284450ffd3d94ea0c36a94ccd56f753b450214d3. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CH8191001662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fca74625f3ca38c6d18dbedb505021b26266f7a24a8bc74d47f6e0de925fe0. 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/CH8191001880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67da065567cab2c2034b5f579eba739589fd0ffd836725ae17623055c4fda691. 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/CH8191001895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb393402025fbbf847a1303bd8d205932afab2fb950911a83c41e3fff78c16c7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CH8191001939.
People in Da Houze (The Dukes Breakdance Mixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14c7d1c4dc1a9f868152df1ee58832a32af84be73dcad9fd074bd80ab174f96. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKACT2232392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b09dfb1f89793be33c3cd38ef87ebe127e8c679df87eb17d3b3e63ffee80bb7. 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/ITDW02400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0c07482a8ca12436b37c68ecdc886ec586d70fea5a2cc686584e575e6fc60d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ITS832500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406fc80eb056de06862b0d6b98f6f371ae6047076cb3b2bae0fb9523be7ef769. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ITS832500029.
For Peace ( Love Love Love ) the Dukes Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b56f8e1ec5a39bdad3c83546ec76c8f5f26b2e6d193b470a320a08eaba87b7. 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/ITX4M2300106.
There is Soul in My House: Purple Music All Stars 24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bbe4be8c6cca5a760f8e70bce627a6314ccb2f645e98d16f18a52d1277e051. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH8191002126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbd2920c2c0f301cfd618a42f5d3205a84d480667ee99c23a8e82ef2d8a0536. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITX4M2300104.
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 0xcd3a5aca99a2a78d5584f54392d84883fcc01addeb22cab9e0e5b787784625b3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITX4M2300105.