Sir Charles Edward Bainbridge Brett, KBE, CBE (30 October 1928 – 19 December 2005), was a Northern Irish solicitor, journalist, author and founding member, and first chairman, of the Ulster Architectu
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 0x6b956037de542185f4145bf1da9db6c3db54ab6d48707a1aa3837b6471fa5c02. 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/24d000ae-b63b-4d19-9c02-28c97f041c20.json and https://artists.proofprofile.net/proofs/artist/24d000ae-b63b-4d19-9c02-28c97f041c20.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 0x004d93f8545cc9f4e95caf1542c0cd6024ee3ff1ca95b4aababd29dd0bbed2a6. 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/GBLGL0810031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd627532481bed5a8cddfb66497737e3fdf8897683e5a877c570778121b8d2826. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBLGL0810053.
"Utrecht" Jubilate, HWV 279: O be joyful in the Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c8b44f4c107abf658b7136791923b32671f9b24ceb260f347d10d14191703. 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/GBF077900491.
"Utrecht" Jubilate, HWV 279: For the Lord is gracious
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0723ddd36018a8c54bea5f1372e543f959c9b0db93f8b72d85a75a41f2f50e93. 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/GBF077900495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9627bb7f5172a3831a0702eff1112755cef0a8ae493a440a0150f8461669af75. 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/DEF057502600.
"Utrecht" Te Deum, HWV 278: To thee all Angels cry aloud To thee Cherubin and Seraphin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378f3b289a393a70571ec144c474614831b629b3b65fa760446eb400572122be. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBF077900482.
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
"Utrecht" Te Deum, HWV 278: When thou took'st upon thee... When thou hadst overcome Thou sittest at the right hand of God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf039e838d4b708f07f903172bd7233465e6b3e61327c201315868bbbca5211f. 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/GBF077900484.
"Utrecht" Te Deum, HWV 278: We believe that thou shalt come
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0efc995e02ed40d11c1d771d86afb105cc0c55978c8df166d183eae35ba45d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077900485.
Purcell: Come Ye Sons of Art, Z. 323 "Ode for Queen Mary's Birthday": No. 2, Aria and Chorus. "Come Ye Sons of Art Away"
Purcell Edition Volume 3 : Odes, Anthems & Ceremonial Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485d0c25fd598df60fa872b1910bb4be13847311616fc099b0afeb4e70478b91. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FRZ207600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa7da39fbd698f61cd81fab07551f5704f5ddcb956a717d1f4e21e8f147ab9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEF057502520.
"Utrecht" Jubilate, HWV 279: Be ye sure that the Lord he is God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e9ff7066810d5aad44210ec91c2bad0591f7918432b09af1a5ff011f1419c0. 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/GBF077900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536155f077910d20450e8437d1d5950606fa93096ca8aaa395a2a4745a57efdf. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057502690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5dbb652140f4d5ed681043c217bd67dab1dbe94b675f9486d176fd505e39bc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEF057502590.