1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x80f30f82b6605019b19fefdb507044eb298f5185907e3c7a19c0a1d8266bdb30. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7b5003d-0b5d-4fff-aa47-b91703b49ac5.json and https://artists.proofprofile.net/proofs/artist/c7b5003d-0b5d-4fff-aa47-b91703b49ac5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete New English Hymnal, Vol. 20
Winchester New "On Jordan's Bank the Baptist's Cry" (Arr. W.H. Havergal for Choir & Organ)
Ottery St. Mary "Where Is This Stupendous Stranger"
Ad tuum nomen "Word of the Father, Source of All Things Living"
King's Lynn "We Sing the Glorious Conquest" (Arr. R. Vaughan Williams for Choir & Organ)
Schönster Herr Jesu "O Most Merciful, O Most Bountiful"
Aeterna Christi munera "The Eternal Gifts of Christ the King"
Gute Bäume Bringen "Christian, Dost Thou See Them"
Diva servatix "God Everlasting, Wonderful and Holy" (Arr. R. Vaughan Williams for Choir & Organ)
St. Thomas "Now, My Soul, Thy Voice Upraising"
Iste confessor "Only-Begotten, Word of God Eternal"
Song 5 "Father of Heaven, Whose Love Profound"
Nun lasst uns Gott "A Brighter Dawn Is Breaking"
Harwich "Jesus, Our Master, on the Night They Came"
St Mary "Lord, It Belongs Not to My Care"
Birling "Spirit of Mercy, Truth and Love" (Arr. G. Shaw for Choir & Organ)
As We Remember, Lord, Thy Faithful Handmaid
St. Bartholomew "O Vision Blest of Heavenly Light"
Slane "Be Thou My Vision" (Arr. E. Routley for Choir & Organ)
Ellers "Saviour, Again to Thy Dear Name"
Deerhurst "Hark! The Sound of Holy Voices"
St. Andrew "Jesus Calls Us, o'er the Tumult"
Lord of the Dance (After J. Brackett's Simple Gifts) [Arr. C. Dearnley for Choir & Organ]
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 → block OTSBitcoinBlock must exist at that height 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 0x085b0139f89cebc21814243e50deee85f36f7fe726b3d40ea9672605211a9919. 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/GBXUX0872006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0a945a5b4ea096b279e5fb19b5c3df457e99d402a95228fd8981776e186073. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBXUX0872010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931746ca8267641ae2927f0764f6b2385418e00279e33032a03d0a7d77768301. 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/GBXUX0872012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5677ef3cde56db44ab08d8d043dad4aadbd5e44a4516d0acb35eed70bc1575. 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/GBXUX0872020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f324fcacd2e08ce01fa3d15198f56a14f5ad13cf8cfd87f4e4b94ba26df8b30. 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/GBXUX0872022.