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 0x0aa1dc10746ffb938be1aa45aff07326b3f9747f38c19d84364a6a102a62cef4. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd6458ce-6f95-4e91-8f90-f4d61222b347.json and https://artists.proofprofile.net/proofs/artist/cd6458ce-6f95-4e91-8f90-f4d61222b347.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hoover: String Quartets Nos. 1 & 2; Trio
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 0x00594322f780554202c8ba446ba3675889a39761af06d30c68a751af9fd13ff3. 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/USX761483119.
Sonata No. 2 in G Major: III. Allegro molto
L'Enfance de Christ: Trio of the Young Ishmaelites
Night Skies: Orchestral Music of Katherine Hoover
Flute Recital: Zukerman, Eugenia - Drattell, D. / Debussy, C. / Hoover, K. / Larsen, L. / Escher, R. / Bennett, R.R. / Bozza, E. / Honegger, A.