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 0x9b4b0b9cb41f762267a91216ece5810e24dec8baecbb3b97d1c25d113707e4cd. 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/3ed97216-bfc0-4488-9ffa-6d4e59491222.json and https://artists.proofprofile.net/proofs/artist/3ed97216-bfc0-4488-9ffa-6d4e59491222.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 0xedceeeda304a018b1f6478f0e083c9117d2e53e3a798870b0cf2442ddc0c7533. 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/USLN62200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c17f2d26745d286d55f930b5383c15f48d1a7db2e45f8fca04f86e4140fc218. 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/USLN62200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcd9d4994bfb14c8d5dc95ee02dead0492f0333de8706b1b9060372ff565faa. 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/USLN62200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b8b36151f43efb1679d6777d1f6f4ea369c22778f945a9ebe2003c6f418828. 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/USLN62200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba07208e3e695b7266806b21b10184f9fd09e8610a5bb8fc4d5f02a309b7be92. 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/USLN62200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a10d9b373afd1b6e3200cc2a97e9f082d0d6ba257adf693c63cf9075a0a1bfc. 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/USLN62200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc90cdb6354a21e67efcb6dcaf1a63b8ad6e8a0459b235b654186903d4b7ffe. 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/USLN62200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c96c9e573385429dbcdaf06d2a2232437f0fc1e0065fc6671622f32d00bad11. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USLN62200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60d7a22ba32baa6cc72003f20e1fc67e5ea6b11abc3ef84d6f0c831617df117. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLN62200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8df2852ad2db84988f5495cba52c91cbccafbeb098d3945c559245c489023d. 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/USLN62200410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6479bd98c84db51de48c9a1da8786d0f983210f74be8d64e45dbd53219cf6c0. 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/QZES82404440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf4c2663a18d445810455dc912e1023340724c69281b96dd78286e28696953a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTB32341823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd271d6927aecfba412b29bc9d6eb5e0fbc152813833949bf51a52cefde215493. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB32341824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08661e8cfab85f3b5ea47d428cd6988058b267b1b6e3f1704b35a2c50d7736b7. 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/QZHN82319891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a10d9b373afd1b6e3200cc2a97e9f082d0d6ba257adf693c63cf9075a0a1bfc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLN62200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b8b36151f43efb1679d6777d1f6f4ea369c22778f945a9ebe2003c6f418828. 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/USLN62200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea770ad2cb90465540de2315e8326e987297665fcd8003d08ebe5fe51fd4063. 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/TCAFW2128398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3995bc5630f4fd3fa82bc5049f88234a5f5a57e380353beedc0e2e06f37fec8. 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/TCAFP2145304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9990dceeb781d3f62ab3789ef7a9703e7adcd0c154966d86e7331ef3e2587e78. 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/TCAFK2135359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a44072ef4bbb17a1737c03255731ab998bae9819b8ed031bb5bea500f3bd24. 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/TCAFH2081758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada0de01ccf999133cd5e9f739481c225d5890a367a91df97dddfe56dcc0e757. 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/TCAEK1953954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1549effb152073a1bbdf6cc4c1aee7c8b2f406e68138e80980770c65a327e333. 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/TCAEK1953957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ea993b8d95005fc5f4f33f99ad39faa725f5d402398c3b59f3c19bfc6d79b4. 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/TCAEK1953966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e06268db469d46f6fc1489985ba749e51def1fb70a700f480237fcc34d6127d. 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/TCAEK1954044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57997c9ada6c6fa7a3627e547ba70edc955fcfe57b94e64dec1c37c72d068f65. 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/TCAEK1953977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d62131c4433c6ada0869ef9718ba79172f4b3c758b38139d791833d6eb573ef. 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/TCAEK1953985.