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 0x4413ff67d3f188d1676a28a3d175eb38c45e2eb1be9d8a722303699a44956bed. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97901040-c60f-478c-bd20-b0c0fd26a0f2.json and https://artists.proofprofile.net/proofs/artist/97901040-c60f-478c-bd20-b0c0fd26a0f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 9 In E Minor, Op. 95, From The New World II. Largo
Images (Excerpt) II. Iberia Par Les Rues Et Par Les Chemins
Nulla In Mundo Pax Sincera, RV 630 I. Aria Nulla In Mundo Pax Sincera
Symphony No. 5 In E Minor, Op. 64 III. Waltz. Allegro Moderato
String Quartet No. 1 In G Minor, Op. 27 II. Romanze Andantino (Allegro Agitato)
Messiah, HWV 56, Part I For Unto Us A Child Is Born
Chapitres Tournés En Tous Sens (1913) - Le Porteur De Grosses Pierres
Herz und Mund und Tat und Leben Cantata BWV 147
Carmina Burana, Introduction Fortune, Empress of the World
The Four Seasons Violin concerto Lestate
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 0x7822462fc5594e6f3750dd1c88c46f97d10d441c1819442bea6bf6a5e364c6da. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAS2372652.
Prelude in D-flat Major, "Raindrop Prelude"
The Planets, Op. 32 (Jupiter, the Bringer of Jollity)
Piano Sonata No. 13 in A Major, D.664 (1. Allegro)
Suite No. 5 in E Major, HWV 430 (Air and Variations "The Harmonious Blacksmith")
Cello Suite No. 3 in C Major, BWV 1009 - Bourrées I & II
Fantaisie-Impromptu in C-sharp Minor, Op. 66
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4c13834a4c30ce6317709dd5c8cfc99232de0295423ad81f8249c5e4351b3a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTBC2354800.