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 0x33320b41b02bf8d21424f2fd22263a4aaa95514bf2a27e1f282951757e664ba6. 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/e2f13866-cd69-4696-b698-55fa8ec072b5.json and https://artists.proofprofile.net/proofs/artist/e2f13866-cd69-4696-b698-55fa8ec072b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Philip Stopford: Te Deum, Benedicite & Music for the Liturgy
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 0x7d3003fa33d6e4bc36e45a2ff67a236217d1b34f1aa857f7a5433372fd75b874. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBXUX0984708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c1a45cfb555db429cad18a6fe34ff07d38d9d8f97f724cb0283fc1311b3dd8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBXUX0984721.
For the Beauty of the Earth (Version for Choir & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bafef051101d5b1e0e00ebd60bd1c6f0df710160f93ac5f0c0095347abc538f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBXUX0984724.
Be Thou My Vision (Arr. P. Stopford for Choir, Flute & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96651e4b9c5a54e23ad2cbec29ae172534742d871ad5ef703db04e806461c17. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBXUX0984725.
Belfast Centenary Eucharist: III. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf43ec34da4bfee8b6e6ce01d783fb8d80794bd9579e61b8a9d05a90e3cc097f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBXUX0889106.
Morning Has Broken (Arr. P. Stopford for Choir & Flute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570e7af630cc73d72612c6f500b186c7109ee246f624e5d732cb0dd26eb1775e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBXUX0889109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5a67757cb1c31907c2da0880eace86b0012e8d1c0f5ba4ded33f8ba35233df. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBXUX0889122.
British Church Composers, Vol. 10: Richard Shephard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6077f31b8e029bc88f66a9770b46355f72fa3a809da6b8a278a3305bdae8dd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBXUX0884009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea967757ef0c812c4c6c5a6da9ad78fd009b597edeace6b1af36e331ed92894. 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/GBXUX0884010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0360fee60718e69d70fb9ca4f33bbf98c932a11d2de056d2a87214a970cb4002. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBXUX0884017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae38be830a9fd60035d56fc4f04d42b6f7ebdf94194a5fc89dda64cfbf207cbf. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBXUX0884023.
British Church Composers, Vol. 9: Herbert Sumsion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f392cfdd510ff816a4dfa6e2a9f3efd41f2d9d7a4095a34cf33e4201bbc424. 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/GBXUX0883901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1d328d4dbd0e6c3c41f30560e596090a15e8bfafd671eaa7cffa48d62df7d3. 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/GBXUX0883902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837b67c3b908829632ed41fcc618f363294d9a5bc44961055cc01f9ccc38e9ec. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBXUX0883908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd877fa28e2c3580a61605e9f602881740c76a1c0b66ec7c72f940f6628f11. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBXUX0883909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb730d032d8bb7fbafa9397fc907aeb8d85e2cb7a1967e919fd2236d164c8a1e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBXUX0883915.
British Church Composers, Vol. 2: Philip Stopford
3 Sacred Miniatures: No. 1, God Be in My Head
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1642d1932799d59c09caaf576de5e3f0b462b18ea39173654fb374bfef1fa967. 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/GBXUX0883207.
3 Sacred Miniatures: No. 2, God So Loved the World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb176e46af617e1f07ea6cbad0cfa7362263247b7125253966cfdd6bbfe1cd59f. 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/GBXUX0883208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3debbf0a7174c616016d7f2661d2fe4db034d5ad4235987e995ff9e697e71f74. 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/GBXUX0883212.