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 0x64479a08c159b153186e03922b6d0bf374b568825152a42033a45d267efa3467. 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/1151a2ae-429a-4544-83e9-c985917efec3.json and https://artists.proofprofile.net/proofs/artist/1151a2ae-429a-4544-83e9-c985917efec3.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 0x257008aed6dd3fe6c7b7289ea68367cb3bb2f00969439b3e107b208cfb3de0be. 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/DKUM72300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5032b8a1dbc5d1b501a20663ed8cce9b18a3fa35d66d129078a0a3ddf1c3673d. 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/DKUM72300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eae79babcbc3d2ddcd99f48f3ce0103fbeb36c312fada3fa2e60fb53f842e95. 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/DKUM72300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31bed7ddda5b5c27d2a3bd4ec4029d42fd9d6392fd5db7816e517bafa97be0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM72300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3508d050ec005246feeb4b991c5a862ed6e0b7760d6383d05885ed5c58a3db2. 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/DKUM72300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f87e82842eb5d065d3ecbf4465453a48a745159a0a74c93074a2d59fd5e0fe. 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/DKUM72300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1d5c080393b80639dd53412f26398c51ad273e1b7b14dcc3f4355ba23658f6. 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/DKUM72300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee00611de49d68bdf765d12326e339ff8023765d55bcd18742a070fb7b55e937. 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/DKUM72300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb596c286204595741b66f7e5d5572b81dd86248a41ceda44f2bc7669b5a5802. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM72300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8dd579fc6c6181f97d9fb4a6f4dfbaacfb0632baa508e919f8f2d0c6ef2ede. 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/DKUM72300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b4ed9d1a2bc300ff33ae0a6c80a522ea0872634d0d8d40a2ce28c002ef519. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM72300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e37aa4e255d322e66a57e3e2ee2352ddda57dc0aeb972adf11bab311dae351. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM72300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121b3ed80a0ef29681bc81f77ed6e13a4b97587cdc4aef8f8cea43f7e12866ec. 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/DKUM72300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe309074c5d3e96b766b51d1f11964e4ed7d4b7691d46933ec25caba5f5096d60. 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/DKUM72300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c96fd6688641bb3ddca780e955daa9d9be5bb2c7085ed1699b0deecbebe0e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb57e9ae1be6b646334e55f07ed1912b8ec08f4fa480d526df7c676996be4a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e72c3e3c749c27fbf6c67da350d5405087555ca1d938c6425f09702c2b4c5. 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/DKADG2300479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ab738b0756f9dde7211ea6e59f32e101a098144c8ab73613348cfce33a0c1c. 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/DKADG2300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358dba3e71423330ce32acd002c9603754dfd08b3e3695c5106165fd550a5315. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e72c3e3c749c27fbf6c67da350d5405087555ca1d938c6425f09702c2b4c5. 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/DKADG2300479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3287207df832e7200d50e1de1a616fd4ffb613cb15a5194641365af986c07196. 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/QM6P42453985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c81e3ee73744f2abd44e0f60c15fcaebae8e2be281bcd9eb3028f16bcdec0. 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/QM6MZ2430378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948e9782d667005520c6115c29f6f51326311516248b7706c64a8c40db0d2b2. 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/QM6P42309094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3deb58605fa100e00ba85e952c3808b5584b6ffeb90b7f53a374eec5bf708a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62289972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecce1293f8e2a98330c3f3c946fa29cefadc859ee4eb87dcc601f65515fa198. 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/QM4TW2569753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2c935f5d89d3d485e5d783147a468441d3bbe309e1d048468a510015a6face. 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/QM4TW2569754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90b4837fb11996e0d0fb9d9e47456bb99640f5fed0b0c52bb0e36e5b49013bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2569755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7c6f85f84fef27e1f435d945c8873047e30eb32824c1ea46f575f5d94d73d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2569756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe99d8371e48233946b0cf80b62ff76afd29e91de938477401fac6f0b10015f. 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/QM4TW2569758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe01544d7a66d093cc2909792b98783f6ac7b01a64cda3774a26d8f367674cee. 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/QM4TW2569759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14e0177ac2402203132ad9639e5f67964e5f6d3a3047e3eb20c99be2a5a1ec. 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/QM4TW2569762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e543e422a4a2e909bde278576f13ece7c83edcc53111a6ac073e465f1ed0b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22593178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b62a13168660461cbc3107842875ff63754def47d09dd4e93def03068401fe. 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/QMFME2433383.