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 0x073471537cb1bb8610efc63d06aa62f264bb31824062a35d5663a5c72bf9f941. 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/6153503c-e602-4d81-99a5-6f2df5e5f208.json and https://artists.proofprofile.net/proofs/artist/6153503c-e602-4d81-99a5-6f2df5e5f208.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
God, Abraham, & Xanax (Live From San Francisco, CA October 27, 2024)
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 0xa9240d1459cae89479a4850bb63b584b1591bf87886fdb114ae72b3a369ee3b5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502120 — a six-check JSON result.
Payola (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4de4ef3bc8189ddcabfa4d4a98eec06800162862cea2b62c2d5040ff58ba751. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502119 — a six-check JSON result.
Fentanyl (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ce69a85242a89243adf6a4aa952396d37616eaa17452b8762f972feadbdb91. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502116 — a six-check JSON result.
Cancer (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207842f716fc55dcab89b6f2a864015b11e049dfabe0e98f5829ec43bf9a5a83. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502115 — a six-check JSON result.
Walmart (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e663903f048df078acb6e4955498c6eea8f6d625a690ae7d28fcd6a064f1d0. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502114 — a six-check JSON result.
Whistle Boeing (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ed0de57209683a7352881b8704ab4feb927e8f2425eb8e91fea5594468ade3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502113 — a six-check JSON result.
Horcrux (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d7e5715848d35143df5dc9a177e221c487df2002d8543e70f5272166a7823. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502111 — a six-check JSON result.
Have you Ever Seen The Rain (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b10b673e4d960d819d4d764fa38f78ca617ef284778aa4fa7d34f6c920ae96. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502110 — a six-check JSON result.
Knockin' On Heaven's Door (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4f18d0bf157a28ffff0283c861b0335c1d76f6a8fcd85e5904897388a1dae4. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502109 — a six-check JSON result.
That Can't Be Right (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131c6cdbcd40f158641697f2b2b803d73131aeb6622a4c72b5b63ab1d0906001. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502105 — a six-check JSON result.
War Isn't Murder (Live From San Francisco, CA October 27, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02875a6ad0f17b3d8126c72a892d9b114d219fbeeb69993a07007fd4efa32a3c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2502100 — a six-check JSON result.