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 0x14880fa5ca2991f2d09437686ee67c5ac9ddcf16c0e0585299462cbaf2954d5d. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19e4b312-97ee-4397-a953-e99bf28742b1.json and https://artists.proofprofile.net/proofs/artist/19e4b312-97ee-4397-a953-e99bf28742b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Crossing the Bar "Sunset and Evening Star"
English Motets, Op. 135: II. Eternal Father
4 Motets sur des thèmes grégoriens, Op. 10: No. 1, Ubi caritas et amor
Deutsche Messe, D. 872: V. Zum Sanctus. Heilig, heilig, heilig
O What Their Joy and Their Glory Must Be
Lord, Thou Hast Been Our Refuge (Psalm 90)
The Official Album of The Coronation: The Complete Recording
I'm Leavin' Town (But I Sho' Don't Wanna Go)
The Stuff That Dreams Are Made Of: Super Rarities
American Pop / String Band Music, Volume 2 [1923 - 1937)
The Official Music of the Coronation of King Charles III and Queen Camilla
Choir of Gonville & Caius College, Cambridge
The Evening Hour: British Choral Music from the 16th and 20th Centuries
Panis angelicus – Favourite Motets from Westminster Cathedral