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 0x894dcbdcae9835b4f0e5c67742a6fa38eea41f88eb7510104d75ddfcda743420. 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/9abba2f7-a7d2-4e26-8530-5d6e6b063454.json and https://artists.proofprofile.net/proofs/artist/9abba2f7-a7d2-4e26-8530-5d6e6b063454.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 0x910f41cd1563ed91ec0726d884485fe081a87244a5c473fcd25142423c4d4e44. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/FR6V80009347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7ed5a99bc8c9fb3197f4761dbfc3e413161c6634d25858cac4aef4962b394c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR6V80009352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118ade99c37866b12afcaa7fa81c2a4714c64a7440f1f3e088cd202b0a169e8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR08Q1800004.
Chateau Flight + Cabaret Contemporain = Terry Riley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb92a938b8b12fe7c61b16f9391c86422839edf5d32795d02f59deca2200c4f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR08Q1700084.
It's Complete (Chateau Flight Dark Side Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19938f528de459c0951e48ad2c3fe5612e32f3e4c972f98e86e5fb8dea609c7. 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/GBHFW1700115.
J'ai dormi sous l'eau - Chateau Flight Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cedd2120aae727e8d0d262ad94bdde8d44accd0f0852dd32174285c9990d46. 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/FRS639700401.
Superflight feat. Marie Daulne - Maurice Fulton Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fe0fb9e25e2c9336a36aa2061103beeed9bcd7efe853e753ad5d8d18135c01. 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/FR08Q0500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aca363c250357915dc133c40d2eb2579864f06d90ae94f7a179fc272106f559. 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/QZH5R2000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8320e23ac9240705538475e54cab6e38e0c1f38439d4e01854a49a43c2cc624. 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/FR08Q0700342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c8b07b0ce28c51b3317e5451bff1af4625087ccbe3554dc2190563ad308c54. 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/FR6V80009356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba96aec1d0e01f7af020125d7273fccc1835eaba5bcec683b2e9422fc48c44a5. 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/FR08Q0300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b70c6e0489720cad1a7a6d9c7683fab2d04d7eb8bf8e5bb7e592d125c446fd9. 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/FR8W90600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425344e3d434f9095e76244f9b0059774ff6d8e26def254d986f71b708b9f3c3. 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/FR8W90600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f6f5c1c04327b1e1a4e8fef406c10e5c59649cff05140618c497c4bcf65207. 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/FR8W90600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c67fef5b24aa547e14ecd547d8c5916c5a296cf7cfe5e59501e3e6a1ca2d98. 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/FR8W90600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a692e70289062da73d488239f503ecbcf2ea203722f8e32d12acdb0a035604. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR08Q0000102.
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 0xcfe973e94cdf4ecc61d14cf44252ba4b7f134b742d003e2887d4187506f951eb. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ES8741508103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211fb12bb28e9a501c8a19f759c7fcb533a64625334da11f163e5173090636eb. 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/DECY51014142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09137032741c0fe7b5d6c228653f1212f328d24531d8558dad4440953a3ea7d7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR8W90600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11410f982bb86f3a654fd878d2f7aed5b2cf1392800244cd73b3fa03a91afdc1. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR8W90600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0326151d6bda827bc8bfa55e5383e1ec0e0b6673127444ebefef084bc9d01da1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR8W90600085.