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 0xd5d724cf1c77441567b27ab66ff5de9f2b496654d2921693005146b48384de29. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9466b073-42ff-4f13-92f9-abe8de4f9521.json and https://artists.proofprofile.net/proofs/artist/9466b073-42ff-4f13-92f9-abe8de4f9521.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x61ab56d2c5e232b84eb264a5f5e2e216bb30c33184c2320e0e71f722786ecb5d. 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/ES73F2400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed78f7e3cf8c0a3a6e4201d102ae7b844b1131fe0a09e3ca7a59ca27b179d48. 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/ES73F2400745.
EFÍMERO Free duets by Albert Marquès & Gonzalo del Val
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a02eb165bcba0c02fb6a93399b9e0437c3a8ab4b261e9d06623c7e899eab640. 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/ES7712060509.
Seis Cuentos Musicales. Musicando a Eric Rohmer
1312 Kendolph Drive (Soleá por Bulerías)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916ec3863b957848563569c97bcfab5b65a42a8a607dced2c4c27c5e4033a038. 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/ES67B1100411.
And Now for Something Completely Different. Gabriel Amargant Quintet
Seventy Steps to Vallcarca (Stairway to Diego)
Sarasateando: La irreverencia hecha música