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 0xfd01fcb94235b30d7d0b4a304acd9bc3b00013d3da72dbe8810ea539e2bdca00. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a950e17a-c85d-4d48-b4a0-5feaa13c080a.json and https://artists.proofprofile.net/proofs/artist/a950e17a-c85d-4d48-b4a0-5feaa13c080a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cherubim & Seraphim: Russian Orthodox Choral Works
Priiditye vospoim (Come and Sing, O Ye People)
Da ispravitsya molitva (Let My Prayer Be Set Forth)
Raduitesya lyudie (Rejoice, O Ye People)
Kheruvimskaya pyessn in D Major (Cherubic Hymn)
Plotiyu usnuv (In the Flesh Thou Didst Fall Asleep)
Oslavi mi da pochiuy (Remove thy gaze from me)
Kheruvimskaya pyessn in F Major (Cherubic Hymn)
Kheruvimskaya pressn in G Major (Cherubic Hymn)
Kheruvimskaya pyessn, No. 2 (Cherubic Hymn)
Kheruvimskaya pyessn in G Major (Cherubic Hymn)
Dostoino yest (Blessing of the Virgin Mary)
Kheruvimskaya pyessn, No. 9 (Cherubic Hymn)
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 0x5a849c0c58e7010f9001246c0d1b82ea829904d70a0b861e1118835bd967a684. 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/GBAJU1200390.
Kheruvimskaya pyessn in F (Cherubic Hymn)
Kheruvimskaya pressn in G (Cherubic Hymn)
Kheruvimskaya pyessn in G (Cherubic Hymn)
Princely Splendour: Choral Works from 18th Century Rome
We Will Remember Them (Per mare, per terram)
In Dulci Jubilo: Choral Music for Advent & Christmas
The World Has Waited Long (Arr. R.R. Terry)
I Know a Flow'r It Springeth (Arr. Michael Praetorius)
Redeemer of the World (Arr. Edgar Pettman)
A Virgin Most Pure (Arr. Charles Wood|Peter Leech)
Maria durch ein Dornwald ging (Arr. Christoph Lahme)
Duponchel: Vêpres pour saint François d'Assise
Deus in adiutorium meum intende (Répons)
Brevis modulatio loco Antiphonae – Annuale
Laudate Dominum omnes gentes (Psaume 116)
Himnus In Festo Sancti Patris mei Francisci
Post Magnificat loco Antiphonae brevis modulatio
The Cardinal King: Music for Henry Benedict Stuart in Rome (1740-91)