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 0xb5703c61b9557d88deac4338c8e74b72049a8932349d8d4a8a69cf922149c9ba. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f9861b2-84f7-4199-9519-4f4d316f3bb8.json and https://artists.proofprofile.net/proofs/artist/6f9861b2-84f7-4199-9519-4f4d316f3bb8.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 → 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 0xcbaaf0bbd583fc24e48950861b29c479121abbf2bb9d66a29f87ba97a6825b1d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:38Z), 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/GBLFP1812304.
Attorno alla rupe (Centenario del Lupettismo 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888414d4061ed6c32aae20b64ac76a71f2aff3e5f41dd636438608c4d33a1971. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GBLFP1812307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798b973ed0769b988c48cb05cdecd0c6863d5048bbd8e70900d6fef86c5cfa9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/UKXN22012189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034dd955ce3ebb692719b6eac57871e29e354a9c9ca4b5d34c3e9cf4f25c03c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:25Z), 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/UKXN22012196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f62773c116cd988a3a7c34f44164688970ca46ebccecbaa1536d384ee993941. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKXN22012199.
1,2,3...100 (Canzone ufficiale TIC Nazionale CNGEI 2024)