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 0xc35df7ce74f683de2b482735f7a5bb538e403aa63fc161a36da06d93386f9db1. 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/6ab76ad9-06b1-4635-9994-0dadde6f6483.json and https://artists.proofprofile.net/proofs/artist/6ab76ad9-06b1-4635-9994-0dadde6f6483.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 0x5623eb176520af962936e65cd9ea5d7998e67b1175d0477bb2361936c6f7d752. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFW2455026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52324eb410767878c38e16840f6f82f129030ffdef6c69a7fa2f9b4768eae99. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBD2524456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d83120e29d5c019eccaab91571c0f0eaab48b4d478b5b0fd89e7202cf2cc55. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBD2524457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ae77600e747701bc7d8ffb1d2df7718ed21501ca15c29d7fb210a335632e5. 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/QZTBD2524458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01085aa248d73fd35f843abd1d2251e27c8ebe913ccffeca77190f7ad49582cf. 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/QZTBD2524459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2239c6c25792f31019901053fa2d28d7080a9ef9c26eedea3355bfbda84084. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBD2524460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56156a3741ceb40279ad381f1afc22c90179300d846873026bd49603cfc0d7ef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBD2524461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde1476916d2caa02e3fccdddb29b76284c84b3ad6eb38cc76e77fd6f936d64. 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/USUYG1094334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e7151ddcafd4f1d30bb97e12ad93c8bdd8820d1ee4923a0d4d4c58c8a702e1. 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/USUYG1390894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2d142c76b6edbe3efba90a552eb8fc9cc883a0c882de7a627d170dda441f35. 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/USUYG1280004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7b22bfdb34501b9189818fe9f690599f18d2d3377a3a384f4785d4cc72a5f. 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/USUYG1202244.
Ringside Rocking Furs (feat. Tiona D & Keisha Plum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5990158f40825101a6354ef55b52ccc64901ca660f9997751bb18a79b0e7e. 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/USUYG1117431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab18e77e562fe3185ccb8021c4e996af7882cd3eb96194330bd129f520a4966. 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/USUYG1225470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5f54f8b506e6af06c2c2adc8da47584c1eb982f2f27f8d72794741e6ce13a2. 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/USUYG1204066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6112c1c8ca812d902226d044d0b27f43131250af7b1f27f5b7f91230c0eef5b8. 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/USUYG1202205.