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 0x38cb4bcb61ab5a241ac64a0d110896aabaeb08d7266e8818b9205703dafdb6a4. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e012635-1823-45a0-a246-c21347f3fbac.json and https://artists.proofprofile.net/proofs/artist/7e012635-1823-45a0-a246-c21347f3fbac.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Wooster Will Entertain You (Bertie) - The American Premier Recording
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 0x05de9caf297369839e8ea1ebcd14445cffa4778128c97125e63b4dc3dfbd66f1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBALG0100005 — a six-check JSON result.
Travel Hopefully (Bertie, Jeeves & Bingo) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffab68e6d2ec74a92050363a90ae5c4e16528bb7253a629616b996dc777bcc9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBALG0100006 — a six-check JSON result.
That Was Nearly Us (Honoria & Bertie) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d56d9dd5ac261a7ed5707f52723336e947448e5c1bf3316ddd2eb1ee196f3c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBALG0100007 — a six-check JSON result.
Love's Maze - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f25987a48362452a99524f328c488e5c734e604796c96de7aee5cf597f203. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBALG0100008 — a six-check JSON result.
The Hallo Song (Bertie, Budge & Gussie) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af561d9ec60b07394098303c2971218fc6ecdac98547ac7da4c07c50c7948d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBALG0100009 — a six-check JSON result.
Entr'Acte - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3133dcea3360ce6ad04cc4f861a5b329fe17e7e1bc54f4c1e86ca134e3892845. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBALG0100018 — a six-check JSON result.
By Jeeves (Bertie, Bingo & Gussie) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2e001f052e790e56b733ab21a6a3664f75f024280e132ff07b5e3f2377941f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBALG0100010 — a six-check JSON result.
When Love Arrives (Bertie & Madeline) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8060c9f84c53236b3d3d5d4d3bb93e3cc017b454f9ff345f4cb91256db6a9c22. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBALG0100011 — a six-check JSON result.
What Have You Got To Say Jeeves? (Bertie & Jeeves) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00abd2e316907bf255f5dc3fd08636df2ecbaaf68360c1f8ae661fef5fb3625b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBALG0100017 — a six-check JSON result.
Half A Moment (Harold & Stiffy) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2e9dec339843d3cb2d740c4673637bd0bdf553be2fc1d8ea4c50039ff5351f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBALG0100012 — a six-check JSON result.
It's A Pig (Honoria, Madeline, Bertie, Bassett & Gussie) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17920ca1a2eb7d193725c3d152e11e46f000c96d4ea6d39fe45010fd571b3e8d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBALG0100013 — a six-check JSON result.
Banjo Boy (Bertie & Company) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bb42cccc97fbd4fef577d31a15c7cebe1d25ef86a562f2db55dab5108f11b4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBALG0100014 — a six-check JSON result.
Wizard Rainbow Banjo Mix (The Company) - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1867b2d497604551047d0f16202cf35b14fb3055cc7290a210cae233e4cb8b56. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GBALG0100015 — a six-check JSON result.
Playout - The American Premier Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95279dd07fa9c0e13ddb2ed5b98219128d91be5f0ec8c7c0bb9a2cc8ae8f779d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBALG0100016 — a six-check JSON result.