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 0x977bf2a4803e307b0320419b7da4f94d00b41cdd2bb9931034c0133c2724462a. 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/027ba199-c030-457b-9a52-58a448fe50c3.json and https://artists.proofprofile.net/proofs/artist/027ba199-c030-457b-9a52-58a448fe50c3.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 0x51658ddd60045e7a45c30d32c5b1b61fad5c0e63f199c38146b606a9ab6b1c9f. 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/QM9A91603206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cdd725ec95c628337c60f3d97bd61f5ed9f3401a26a2ce02d4ff4b2c70d59f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QM9A91603208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca86433c40c52ba1761075c28f57b98af81c44f9526597d75bb983dc7cdc5b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM9A91603209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bb3ca8c3c8cd3c3085b209fde2440e422b2536bc96fa873a76bdb050ceb05e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QM9A91603215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70603a77432129edd916823536f8a9e84315c7773de859d2f851999164a95d86. 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/USCGJ1829358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0494a828bb45abe2ad54521d24de28d07d7ee0ab5cf239896a0a693a109615aa. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USCGJ1829360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c425b9a380067817aea38f174f2f03090d570c996c237ee7934c109fb4a91c6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USCGJ1829361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffa4e506884cd1262748c9293b6b5d3c70171b9cc0a7542c9db93b9f6be3e5d. 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/USCGJ1959284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffa4e506884cd1262748c9293b6b5d3c70171b9cc0a7542c9db93b9f6be3e5d. 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/USCGJ1959284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ed67eeca6f232d511ce30b01e301295a045d01777fd8f1ade05f6e2856be59. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM9A91822388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28a6e9e75a0fe7398434ae9a8ff6a657ddb54e249345fb6b5e53963f6df61d8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QM9A91822391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9651e17234aba37d02b64d414594ec86c40493a7ee30edee28a995a97f5e1cb7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USL4R2034844.
Jam in the Van - Diggin' Dirt (Live Session, Paso Robles, CA, 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36589df076603f9726179127213323e8a6e3d61a65225feb1a1452a9eafc7f4b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USHM82164310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fbb50e46ad7fc51c71b5f6d92b32661c97f0dca3da1e108f0f240c8bbacfc3. 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/USCGH2441155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eebf596ef4924d596a34aeee738cca8f5c9c66447d666e63e19b80d3c699da. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USHM92190713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9df066a52d42d3d9e2c97591f2dd9cce0b3d2439d5bb5ffb508900262a47094. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM92436865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9651e17234aba37d02b64d414594ec86c40493a7ee30edee28a995a97f5e1cb7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USL4R2034844.