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 0x67fa4886593c7585ec8dd9c903075a41d2887668a80108a4df5489e37e03aab6. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91fceb8c-b8d2-4cab-8389-4248eb69c546.json and https://artists.proofprofile.net/proofs/artist/91fceb8c-b8d2-4cab-8389-4248eb69c546.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Bizarre TWV 55:G2 Bremer Barockorchester
Salvatore Lanzetti op.1 N.8 Néstor Cortés-Nadine Remmert
Felix Mendelssohn Capriccio E minor, op.81 arr. for orchestra
Giuseppe Valentini Concerto op.VII N.11 Bremer Barockorchester Néstor Fabián Cortés Garzón
Telemann TWV 44:1 Bremer Barockorchester LIVE
Der Schulmeister Komische Kantate Bremer Barockorcchester
Sérénade ou concert divisez en 3 suite:Air Tendres Bremer Barockorchester
Les Eléments Simphonie Nouvelle Jean Féry Rebel Bremer Barockorchester
Jean-Féry Rebel Caprice Bremer Barockorchester
Niccoló Jommelli Sinfonia XIV Allegro di Molto & Chaconne-andante Bremer Barockorchester Nestor Fabian Cortes Garzon
Franz Ignaz Beck Sinfonie g-moll op.3 n.3 Bremer Barockorchester Nestor Fabian Cortes Garzon LIVE
François Francœur Sonata 6 op.2 - Stéphanie Paulet - Néstor Cortes - Nadine Remmert
Domenico Cimarosa (Der Musikmeister Il Maestro di Cappella Solo: Jorge Alberto Martinez)
Colombia Re:Mixed Los Temperamentos & Gaita Loop LIVE