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 0xdf52a3c45280d1cfee802ee8275749232d7f132fcbc9da8f7ce04a0213991cd3. 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/f172988b-347c-4d5b-bd88-e54a7e52c0eb.json and https://artists.proofprofile.net/proofs/artist/f172988b-347c-4d5b-bd88-e54a7e52c0eb.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 0x55b2e767cb84da0ec1289f799e113e1979510e5b127c53ded2eb23bf2b50d559. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z1817523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1672ddd5878e84bddeb6dfefc74629abf16b8b7f34e28fa8fc918681c4f870. 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/GBMA22010671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a9da6c3ca8857324733aa0230703cc782d03a2699e897534512bc26e06790. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UKXN22072216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49af751f45ac1e9093e719f2dd966108d27bd04297897c8397dd42ad3a85a06. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLPF6670445.
Why'd U Only Call Me When Ur High (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03783628cbbfb720463f29c196c52c898eb193fd95d86097521a49725a0f352b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLV62109121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c0cb960e167b8a5816160dfd9400cbf302e4bd474250cac42b08d63bc5ab85. 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/GBLV62132652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bed5241a69eea70b0c5ada06a37cb6ec445219f5de4062714e72355923aa2b. 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/BKAVO2300724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cd8a9c86a7150340ea569a6d1b7b896bed234ceb79a98cbfda19ee69df0dd5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/AUMEV2474816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8c12e5d6a1117b89278396a65604fa0b8a851c7eb8dc1e04f29ae240636c0c. 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/AUGBT2448990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b32fba6bee36fdf2a08c831ad7c7f04d715e278d17819e67b153dce26c8ee14. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/AUGBT2448992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb143803e30e6bfe8b8883d4f0e35fc7cf57e8082d3993d6feca1510544e7466f. 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/AUGBT2453093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe58e30db1c2902fc6bfa51c447e244d827348bef156f07b5360df5e2e2c9b75. 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/BKAVO2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a9243e1ad944e2f8893316495d9f5f15e5c3ba742d899236f734ec32cfbf3d. 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/QZHNA2521156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85345eae47001244e488cff23ed90c37709188d027be5f891b7fcb44d69127. 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/BCZZU2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148dceb2a8ff793b5c01f2c5ecf9bdc057b9c2a3bdc34a3d2d9773555ecdbc7. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/DEH742407340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbdb925087511578769fef01f3bf7e7c6e3333adb3e55a27c9e06d418e61717. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/US7VG2075762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a3bb917177b2ae9299e74b02f7b1cc3d94f9076461de1ebff7646f943901d9. 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/GBENT1330295.
Do What U Do - Moe Turk & Fat Cat Slim Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c03406ea2ba6d21ec3e03420b8de1668bc88d6b821554ad494bb6bdce4e185. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBENT1330296.