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 0x6cb9c415fe19c905d3856d7e229625a692209b0801cca36f49c897a6a7e9bced. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acd69015-001d-48ce-8983-a5db119a2751.json and https://artists.proofprofile.net/proofs/artist/acd69015-001d-48ce-8983-a5db119a2751.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concierto De Guitarra Española (REMASTERED)
Concierto De Guitarra Española (REMASTERED 2025)
Spanish Guitar. Yo Vendo Unos Ojos Negros
Grandes Temas en Guitarra Española Vol. 2
Grandes Temas en Guitarra Española Vol. 1
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 0x59443e9d25d8725c19c1ab7b7a34610592f9e304be5fc77d122b2e3967a649f5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA031205524.
Studio No. 9 sugli intervalli di decima in D Minor
Studio da Concerto No. 5 in E Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c103dbdd5ea5ac9b90a7316e0b244bc0df7cce390f37f4eea6180a917a8f98f. 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/ES7930206519.