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 0x7608af95f9e05bb46356ff9ec64f3d9acab0c20429b8cff55c895161ff6eefb2. 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/02836cf5-0379-4e94-86ac-598566530a5a.json and https://artists.proofprofile.net/proofs/artist/02836cf5-0379-4e94-86ac-598566530a5a.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 0x961ebafe0b21513b9c6b19a3369755a35560d9f0117de890f17bedba40affc69. 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/TCADG1764821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965a7fc3a11b284f8f5f4966b12b929ab4897257e79a0ee1f7307b0bbfec6cab. 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/AUBM01800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99169cca2f12fb097e1dfd16ffe8973d335deba51055a4a347e1d55c23cdef. 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/AUBM01700851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b5f406c1603eadb7694ee47b897ca9f602d9b8fa7328930fbaacfd6067eeda. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUBM01700608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1928c1738c76cec54fe1e7c3ca939316f95f3da172b278ce54216853f11ed01. 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/QMRSZ1702261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6fd8bb4573c0ba14d6d7599ddae98a9d3c5a2f81a02d4dc12181c8550cc92. 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/AUBM01600475.
Hanging By a Thread (Remixes) (feat. Natalie Foster)
Hanging By a Thread (feat. Natalie Foster) - Husky Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26bef5c5651b0bbe272bbf3a59ff90ffa0b35b383bdf3a61189ac2d57e3d5d. 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/AUBM01600493.
Hanging By a Thread (feat. Natalie Foster) - Flowidus Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757838dcd4bd315fb04fac1dba5aca6af72b49b610eceadb404f23d9905f2cc2. 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/AUBM01600495.
Hanging By a Thread (feat. Natalie Foster) - Just A Gent Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce7a0a2237cacd4731a9c1fc421fa9f6719f108973ae46f42f0d8dadc7b5413. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/AUBM01600494.
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
Hanging By a Thread (feat. Natalie Foster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c4b2f27250210e071fcfda5793dd9a6ca3054a8e4a97b6fc13448f9e3ff38. 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/AUBM01600312.
Not to Worry (Remixes) (feat. Governors)
Not to Worry (PUZL Remix) (feat. Governors)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82735f579b45515fa060531ea433ede7af2ddbab1157b90b8672d850524016c8. 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/AUBM01500577.
Not to Worry (TACHES Remix) (feat. Governors)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38564d30f1bde9ab7646aae15d1408ed9577b8ffee011c207b02b65be0b48980. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/AUBM01500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759c9c58f1e217f48f4d75066181244417464def405de3cd5f01538039c8ecf. 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/AUBM01500241.