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 0xfc4e2ecc09eb37aae213db9826bcc20a6287bd34e8f6d4e6ef81173f80c7af9d. 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/aaaae0b4-1d83-4c22-bfa2-fa153d9ba9f2.json and https://artists.proofprofile.net/proofs/artist/aaaae0b4-1d83-4c22-bfa2-fa153d9ba9f2.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 0xe3e5a3d776916b9fd2c168b8c2404c9d27f5b9aba730105e3d548eca8f8892b9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBUM71403944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117f229fb12d0c0c160f2ea18a64a2ca82cc3698242ea9c548982710a2f98fc3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBUM71404418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72940192ed999d6e74a89a390c42331de706e90f90bfd59b42353179cb88a27b. 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/GBUM71502518.
Clap Your Hands (Solomun Remix / Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac13c56153a0d0aafef5c9d9841176a21527c4d4233587bbadba2cfa142074d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBUM71604700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf685959d8638ee2ac2f7e6aac28b7f69339de3902d3c78afeb5b1bb7327e520b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/GBUM71604699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0e9c6d21e9dfcd650747006ab51eb425bd9db53b4c1f79f8b79555231e947. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GB3X61700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115f4b21ce5e3b8af654b6be5824b55554b2bc9620a50eeca6289034a5f7a92. 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/GB3X61700010.
Everyday I Dream of You - FYI Chris Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f41a0beed0676b1a838b97972b28f338b45b8963e0264b33993eafcb9302b9. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GB3X61700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145238fe29d85200813db69b9e472fe542db885b2151d9de841c1851a2dbb9e0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GB3X61700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897fff8f1ad94381bf8bb8852e8a2bb2a57fe48925b9a9b2e2b8cc0465dd35bd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBLFP1910254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7791574b9cf62e0552763382db15065d9211cfc1755e36481553791feb3cd6f7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBLFP1910284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b619ab0a844f2056e36a19c705c84ce68143c406dec01ada96c004c6a497884. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/GBLFP1910181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e7d29a637d04b0007f8ed1651cb69d9aab0b1939a3ccde27e81ee9a2c8f40. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP1910285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd2ddb623df34bf9e99c2d92a830b785f91f86a7db9cddb53ec53e6afa16ee9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ61914495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fbd3ec0075f11b7d7aeebc849571bac87cbb949cdaf8df56c2d3ba9aca10c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN31945896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1dcf09e8e171f773e3872d4c611fdbed2c5853ee3488e27bbb28444f8ad981. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZHN51981461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c4a1c4e72ea0f07057be6ec014ff06d840a0025415f6a11602a7a6513be84c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/UKPU21800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ebc35d5f38ed6dea8b6e1e063c5bf1066896fc47235ae2bcc32b2c9763b2f0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDA82019556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7b40780aebd19ce5bbb394008522d12a6a330185f97dd045b153343eda5a09. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZHN52072166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c9ffb7967af6899268a559008249dd4bf009afb00937614ac6d973ca5bf1eb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZMEN2046483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707350b5cc6afc10731a7d43eb164080df9c5740bf87ae4c94ee0dbf6d43ddd9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHN62103198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60b79297bbf4285e1c15bce30012d8fb10f61b5e9d5cb43fc4b1cbcb35e8683. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN62103197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dead3987fb337d8706772c4e7c4eff5afebc3ec6d70e732cf21f2093a5583a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZHN62163552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cdf94aa8d0b25cd4c358fba7ca854a864ccc689b271e67214e2ae1cfd400b5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZHN62163555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67df7b2f9411bd388d3aed74fa3318237f4e0692ad178302a67b0d537e251803. 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/GBUM71506958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d3efec2d014c6dbf81142d24df22603795f6d4d9b2b71af225c7cdd12804d1. 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/GBUM71404184.