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 0x7d60d29e9a42d5cbea169499047366a391bf88bf8b22135d079546611699fd0e. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27595931-f6cd-4287-a0b2-d95610aaf3e4.json and https://artists.proofprofile.net/proofs/artist/27595931-f6cd-4287-a0b2-d95610aaf3e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paradies: Complete Sonatas for Harpsichord, Vol. 1
Paradies: Complete Sonatas for Harpsichord, Vol. 2
Paradies, P.D.: Harpsichord Sonatas Nos 7-12 / Harpsichord Concerto in B-Flat Major
Paradies, P.D.: Harpsichord Sonata Nos. 1-6
Paradisi: Sonate di Gravicembalo, vol. 1
Paradisi: Sonate di Gravicembalo, vol. 2
Paradies, P.D.: Harpsichord Sonatas Nos. 1-12
Pietro Domenico Paradisi: 12 Piano Sonatas
Harpsichord Sonata No. 6 in A Major: II. Toccata. Allegro (Arr. for Accordion)
Paradisi: Harpsichord Sonata in A Major, P 893.06: II. Allegro (Toccata) [Arr. for Two Guitars]
Paradies: Complete Sonatas for Harpsichord
Paradies: Harpsichord Sonata in A Major, P 893.06: II. Toccata
Paradies: Piano Sonata in A Major, No. 6: I. Toccata
Paradies: Harpsichord Sonata in A Major, P 893.06: II. Allegro (Toccata)
The Maiden's Prayer: Piano Music from the 19th-Century Salon
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 0x877ecb33cab1ca7fe8fcf0b957a6171079827e1a1edfd99a0b6827e4fac87e08. 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/GBAJY0337908.