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 0x871c64971bed4038f28f90dba8d2943640ef8b27fb80e1aae78d0481aec97cd6. 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/978a1d1f-207b-437d-89a4-717ebf2ed4a0.json and https://artists.proofprofile.net/proofs/artist/978a1d1f-207b-437d-89a4-717ebf2ed4a0.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 0x45c393ce2b2c302a32eeddbd660409787eb5d7d8a728da11a8e10e2af80cf134. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5Q52102169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe10a70eb8186878785f9df8f5cf2dbc554c08fbc441bbf6861daf5b4b94f964. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:55Z), 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/SE5Q52104188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9925f898c1dfd016f4b3304688bc204b83d5d0fb679de5d3ae7a33aaa6e090. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5Q52103196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1577034a45ca0745af45f6f63b8889636922f53bc7b94c117f44c2e4fb807609. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/SE5Q52104257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b47e1ea9336b30a1a62003761d62f84a6a60f4b63ea9a1f1cc723d622c2537. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE5Q52200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa595d6b3fa46ba3cfb34eab3d8674ccfba3fb48c7f01c2a9e3de4b991d837a09. 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/SE5Q52200038.
Daydreaming About You While Drinking A Cup Of Tea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a1b919a23d7b104831a4121733160a2010c55c329c47f3d0eed79cbd66dd70. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE5Q52201941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad773ca11216fb6dff3cbe24ca3e2690c8731ecfd3daf4450b0d69f2011b41c3. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/SE5Q52201656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8feaea8705596b19e851d660f679b9770ad33ec7648817326d90a72607b5473. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE5Q52201972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9090d1cf1c985fb1e80490b05654c548d407b6337abb0c001732567b617d18c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q52202316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd347d602f0bbbf58d8ef2e81798aa7a6f9343aed90e4c77e53824472368bf11d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:45:43Z), 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/SE5Q52202420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4d5f8f39875adf1a3917bd3661035dc86b3a8628b749afbc24473b3819f3b0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52202346.
My Ringtone Is a Voice Memo of You Last Summer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847599402dce18d93530bb3307fb31b29ca39d83e56a5e84482113de1d3c1146. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SE5Q52202421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b69e698dd67b80840230259f75c63cf49b742b59681046a2533f6b83fdb425. 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/SE5Q52203659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308472956468b498dac605340995473311459d815a78399b2f858e26949820b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE5Q52203973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b21d1b3345275ddb01186fb9b9a5982bb8643b66be9358e46a57b95ad82c43. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5Q52203780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12799fbaee526ec5c3080afb3d8ffd3ded8132393b938c19c190ae2a108f855d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5Q52203660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8cfffb071cc44f16258be4f3c881ff72fd8b8c0077a4e907277803c4f75b0d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5Q52300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7439b20c4f2c1142f2e1a251011b5a42cb29e575fe4d043d86ceb0bf257ddc69. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4934036a000d4856b0eff8c428081624ccce21e070aa2e568f9aa0e3c830f2. 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/SE5Q52203453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8814d19e89af4e27ea385f97a51b2803e84c2ecf24ccd5f931f35a95efdb805. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE5Q52302666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35393ce11a18497f2262428e777489b031846885e169bc83e03d34314a98be52. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q52303054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8a7406dc45a4be3588219a1a4aaf85c586865fc597d62c068e0bb3ae40ed45. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52303450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d834ef0488395bbc52059a68f665bd0b2a8430106ad55a9b13fbbd87a9eada2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:55Z), 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/SE5Q52303052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35c0bf231758ac7e41a70e8b99a6504c22386181a4857f15b7de95061f44c28. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5Q52401995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855859dc0f50c8e6502b575bb20c35f8eb49bc7674359a3fa3bd2e2f991f22a8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE5Q52402410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab41562fa6e1ca76b1b774397702c6e81ec18791b922b1836b2f4d104d283ea. 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/SE5Q52402411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da8fb3ff877512316b903ff4db697eb749a12d5bd53c76dd4f477e24da92b76. 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/SE5Q52500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d68c619b6096c454a49830df34ecbb758b614d028b23db2315302dbc3346b8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52404141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b612f9062d3dfb469d09365343b3524bf4bd8aaa97528c872bb0f40beec1b1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE5Q52501387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e9495289d06ca5d72dff202e4c2fb8b1f1a039574297a69874289491d04e0f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE5Q52502418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6d70cf27af7c88487a4a74bbebfcfb70bc439a77146863f30eb13358f43c5. 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/SE5Q52300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e8821bf93dfd4bbb80faa5a0d392d9337658db707686fedecddb3c68d067c1. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/SE5Q52204129.
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