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 0x1787b04847e9a920539966f39c99c5203a51347fae9fffd002153ee675ce238a. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42a80c0b-5bbf-41a5-bbe5-6ebc3378bb9d.json and https://artists.proofprofile.net/proofs/artist/42a80c0b-5bbf-41a5-bbe5-6ebc3378bb9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Pellegrina - Musik zur Medici-Hochzeit 1589 [Remastered] (Remastered Version)
Water Music Suite No. 1 in F Major, HWV. 348: VI. 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 0x660ab7cc5a692649a07819b2efeafabd8a736fbeb1c0d15824b680ca339f460e. 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/GBAYC8300530.
Bach, JS: Musikalisches Opfer, BWV 1079: Sonata sopr' il soggetto Reale. IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f3f03628ec59dab85a4dd1e8693ed4915cd285f49079d1fd766fff554236b3. 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/DEA348702146.
Water Music Suite No. 1 in F Major, HWV 348: I. Overture (Largo - Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec635396f9164462c70d2154c90d64927dc94449ec1665d218f7861fc3385e. 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/GBAYC8300525.