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 0xbe603ea7360896a2bd9fb653bd84d91fb24c736333b7d832d3fd15d232076aea. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd0c2cb9-b88b-4918-9aef-c6f9c71b05f9.json and https://artists.proofprofile.net/proofs/artist/fd0c2cb9-b88b-4918-9aef-c6f9c71b05f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Very Best of the Grimethorpe Colliery UK Coal Band
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 0x15f52ad75bab7d72274da95ea4c43c448b0fdb691128a88a1eabdcfa9457146f. 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/GBARU0000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e4e16f2fa145939387c05cf27450302fac05fc1440a158da5623f33f96a531. 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/GBARU0100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ed4b962168c0562d6b95c5e27a38aeaf7e7f3d7f5de5e45d7568e51bac272b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU0000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f143e998d638e2a0d6e957680298b3799814ece2657e93270f2156ef7c25540. 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/GBARL0300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8184c9a1d0a0d42d5d5ed49e109a65746cd67f4a7b581344642e9b0a47b86daf. 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/GBARU0100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9560b1ea752ef8be66f47126a6096af954c31ecf2d214e10fb0669c8b963e5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARL0300326.
Bridge On The River Kwai - Colonel Bogey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651205f1be03c3d98de712c1862e9bc2a1956f26a5ff263a250615908bf3dc40. 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/GBARU0100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59740585f10e3c1b45922f29899b0f6567b33f6ba7d32911694ea1230f04dc14. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/GBARL0300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9b888763f45b6977d63aae5422e7e0bad554bdbad94b5713d7705a6a36b747. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBARU0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e33ba666e7c3ad60ac62a0476e62099f7c89fe8af609ff233ab34a0868275. 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/GBARU0100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49249bf906226e1028f57760695578550f00dea4e629613d31bec0ab5c24f2a6. 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/GBARL0300320.
Theme (from "Indiana Jones and the Temple of Doom")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1a769f1bdc0da85675fad1a61eb81af74437e30302d090bc5c35894979df16. 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/GBARU0100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8709e1c8d6d93755153c171d8e85f13208af11e77592aa7fc71b37af01c27db6. 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/GBARU0000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913c47d03c08a0c0e7b32a46d90d22d9df593b20f3ca0e9e6c24c6b02ad9109a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBARU0000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7f9bd425b29bb5ff7aed6e37ee1312209981b62a1f2fbf0f9d1c77d57474ad. 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/GBARL0300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e4e16f2fa145939387c05cf27450302fac05fc1440a158da5623f33f96a531. 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/GBARU0100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f0b4c7d5dbdb07e4f5b7a81016a228d414b75e07c04267639dbab26c1c037. 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/GBARU0100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf844c054e2f25abdec156a9f02aec8f69ecad70dc5d44b9815edd2dd28d96ae7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBARU0100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651205f1be03c3d98de712c1862e9bc2a1956f26a5ff263a250615908bf3dc40. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU0100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfaddc14faf3b668e5ef28d6e74dec9610ae4e8e08afa638b1326cb5037112c. 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/GBARU0100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64733f7805cdeea880c1e9c0438d3efcede6e5604d52bb73361ed421d8b54bf. 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/GBARU0100028.