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 0xd98fdff3299fa733a5857b3fec56015f6c5cbc81aa1dd405faec2585d1ce45ab. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7afaed47-e2b5-4c74-816e-d89cc952401f.json and https://artists.proofprofile.net/proofs/artist/7afaed47-e2b5-4c74-816e-d89cc952401f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Benjamin, Stevens, Panufnik, Bax & Berkeley: Works for String Orchestra
Handel: Water Music; Mozart: Epistle Sonatas
Water Music Suite - Water Music Suite in F Major HWV 348: 5. Air
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 0x9cb004b9a81865a503540df095b172f182d571269560cb0107b2afb7c3812f1b. 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/GBBBA6070305.
Water Music Suite - Water Music Suite in G Major HWV 350: 20. Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb951193640aac95db32e95a79e8b199cf78e1a39773112701ace2982c0a8e16e. 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/GBBBA6070311.
Water Music Suite - Water Music Suite in D Major HWV 349: 12. Hornpipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac51cba8d151172160321a0e1cfa3638fc75850dd3d043e3039425b9cb8ef50. 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/GBBBA6070314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4929e81f4616244bc095a08f0abab72de8b4c0ed60038740c1c6467aa5c4f32. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBF076110260.
Enescu: Composer, Conductor, Pianist, Violinist & Teacher, Vol. 10 (Live)
Bach, J.S.: Brandenburg Concertos Nos. 1-6
Brandenburg Concerto No. 3 in G Major, BWV 1048: 1. (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c28f912b55bece1c2da2d052f4905cd2becfd1b171c50e1d596a70bebecff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF074510201.
J.S. Bach: Mass in B Minor (Recordings 1946-1951)
Mozart: Litaniae de venerabili altaris sacramento, K. 243 (Mono Version)
Famous Orchestral Works - EP (Mono Version)