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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3400b701212c12d71f1c63731d23524a482bf72f49c0ff9d598f7c1bb76cc3b0. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49fda29a-ad78-4a1d-8dfb-8264e6c5e5fe.json and https://artists.proofprofile.net/proofs/artist/49fda29a-ad78-4a1d-8dfb-8264e6c5e5fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shaboyan, Sona: Piano Music From Armenia
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d71f497ebcc25951ea63778d5be5762d4f78a4b381bfc31e3bc2a841ff3362f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEU920437403.
Abramyan: Preludes – Rachmaninoff: Sonata No. 2 in B-Flat Minor, Op. 36 – Babadjanyan: Capriccio, Improvisation, Folksong, Elegy, Poem
Beethoven: Piano Sonata No. 17 in D Minor - Schnyder Von Wartensee: Piano Sonata in C Major - Liste: Grande Sonata for Piano in a Major
Beethoven, Schnyder von Wartensee & Anton Liste: Piano Sonatas