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 0x020122744fb1d59fc63796b97a0221c0561c07907ccc53072f36763b451b7114. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01c93101-dd03-49f0-ab56-df9e82909ad4.json and https://artists.proofprofile.net/proofs/artist/01c93101-dd03-49f0-ab56-df9e82909ad4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orchestra dell'Accademia Nazionale di Santa Cecilia
Coro dell'Accademia Nazionale Di Santa Cecilia
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 0x044fb11f5f6045ccf25428e317570f15f1622acc51b07626bd08ab052da6bd8d. 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/DEF058430014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3a1771f2de9ca9ecfef9833841dd5269ae2bda00e5e56902e7bb0e0ca74e4. 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/DEF058430028.
La traviata, Act I: Dell'invito trascorsa è già l'ora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ab1a04f4f819fc9a38bd48fa062e1f7f56a4275b899171be5cc2e37cf83c37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEF057730018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eb2e848263b46b75e1f3c24dee52f27e7376132bc6caf58cdaea0135c9c550. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF057730039.
La traviata, Act I: Ebben? che diavol fate?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25bbb31189321faed7224997ff4587999d0b725d9a4bce250f726678dc5eeec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057730033.
La traviata, Act I: Si ridesta in ciel l'aurora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dc1aea2cc4eff3ff008e0af67e4ae7c0a488ffcedd6394e5991fc8e83dff48. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEF057730034.
La traviata, Act II: Alfredo? - Per Parigi or or partiva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76451088e815db060e2bc0d7366bbe034eaca71b9ad868f81824f5af4ba082c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057730006.
La traviata, Act II: Ah, vive sol quel core
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf92f3b556f09fa06117dbf9bdfae8c1eec7b85fff16cdb653f2323cc9e89a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057730019.
La traviata, Act II: Di Madride noi siam mattadori
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5367dc485c0640077e9abd7a110d86693bb220bb4099834f9ced09a1087b65. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057730021.