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 0xa28dccb99e796fa2d29992340b2194e1dfddb2fcf14dc7b2c33990ddbe5b5681. 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/ea86cac3-0123-4ab3-af00-d6f2a1e31d04.json and https://artists.proofprofile.net/proofs/artist/ea86cac3-0123-4ab3-af00-d6f2a1e31d04.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 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 0x281e86411a5361fa6e9901214cce2349c7736f8ae7ab0c5922fd592fddca2a54. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUAB01050002.
Praise to the Lord, the Almighty, the King of Creation (Arr. Christopher Willcock)
Abide with Me: A Treasury of Classic Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40a119db89a0edb05e6794e205d7c0f68b1f5d0abda3411ec936cacc52be43f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUAB00650476.
I Vow to Thee, My Country (Arr. Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e89d066909c089ba3eb4ea938d95a8b568d7455d868ef329b1bd63c948fbf31. 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/AUAB00650477.
Be Thou My Vision (Arr. Christopher Willcock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277ccc9c527ad9277f1fd5b6d73287abd81a2d00fafed455d6026aee34c27160. 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/AUAB00650479.
Lord of Earth and All Creation (Arr. Michael Leighton Jones and Christopher Gower)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f1299fca5e099520501957d2fd1132927b7686d0c5851ceab2bf70137b380e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB00650480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9bfa5648cbd8eae550949d4664cccc519cf548c24b4dfc6f8d6bd8d5a4fb83. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB00650481.
Holy Father, God of Might (Arr. Philip Nicholls)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb80ec8a9f53f1c9fef7bebaa1e3d026383df3a9ee6225d4dbd333d56d2a8f2. 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/AUAB00650483.
All My Hope on God Is Founded (Arr. John Rutter and Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1b91297da9f0bc53f324bbdce51786dc19174d6df9fe10e0281017d78d63fe. 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/AUAB00650484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7678390db21b3ddc103fcae9a0a03cc924ffd1d692bab40d663f40178d2da475. 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/AUAB00650485.
All Creatures of Our God and King (Arr. Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b2b708d48a6aedcf111d1581da7d021a54efb638de2e5b5c68d854b9d27fde. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AUAB00650487.
The Day You Gave Us, Lord, Is Ended (Arr. Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca15796d7bbc30d93364371e2b11a7ad0e487ee122869681c9eaa73b80fc792b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/AUAB00650488.
Abide with Me (Arr. Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338f29c6d7cce094a19e571c6056def923a26b4ed9e3c35a6b8f73c2f36bf44a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB00650489.
The Lord's My Shepherd (Arr. William Baird Ross and Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0b4ad4b7fa1deff86b7bec76ae671f9faaa7764df0d80bea5488ef89e81d81. 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/AUAB00650490.
Eternal Father, Strong to Save (Arr. Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea3f3e3cbc072a2b0e30d692881a3c71ce72197de9505111265c5c90f8bb28b. 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/AUAB00650491.
Love Divine, All Loves Excelling (Arr. Michael Leighton Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3af1867fc412bad4d41e8bdf72da893da7d8293b637a7613a1b64673ae7d2. 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/AUAB00650492.