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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad22ed7fc1158cab87db04140d277be18bc28bf4d8bb5f83b89cf95a326e5a9. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0029cd90-17da-4c94-9146-c3f0802caa59.json and https://artists.proofprofile.net/proofs/artist/0029cd90-17da-4c94-9146-c3f0802caa59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete New English Hymnal, Vol. 14
The Chapel Choir of Selwyn College, Cambridge
Southwold "Hail, Easter Bright, in Glory Dight!" (Arr. C. Dearnley for Choir & Organ)
Tallis' Ordinal "O Holy Spirit, Lord of Grace"
Belgrave "When All Thy Mercies, O My God"
Jesu Corona "O Kind Creator, Bow Thine Ear" (Arr. R. Vaughan Williams for Choir & Organ)
London New "God Moves in a Mysterious Way"
Psalm 22 "They Part My Garments Among Them"
Farley Castle "Her Virgin Eyes Saw God Incarnate Born"
Alfreton "He Sat to Watch o'er Customs Paid"
Vom Himmel hoch "From East to West, from Shore to Shore"
Lord Have Mercy Upon (Arr. A. Hutchings for Choir & Organ)
Batty "Sweet the Moments, Rich in Blessing"
St. Albinus "Jesus Lives! Thy Terrors Now"
Cross of Jesus "Come, Thou Long Expected Jesus"
Ad perennis "Christ, Enthroned in Highest Heaven"