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 0x9a4e2d3f36264f7084dc3c946f5d26bcbe651f18820102ad71a135fdf1a405d7. 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/9e414f87-986c-45af-90e1-f4aadd6dc19e.json and https://artists.proofprofile.net/proofs/artist/9e414f87-986c-45af-90e1-f4aadd6dc19e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christmas Mood (Francesco Cofano Remixes)
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 0xf7dd3835d63bb1f6d7156ad72b747c3525a1cd79a0600dd3ac1620952972a2d8. 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/ITI022100029.
Bossa Italiana Vol.3 (Italian Songs In a Brazilian flavour)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13639bd4bb34101241fdec969483bd2aca2ad97d505f07ce2b2af4d53220f2. 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/ITI021700528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab8bfc2d770cb33d534e5280f99fd424cd19c9ec1b934582fb4c2aafc492d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU1674397.
Brivido Felino - Francesco Cofano Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb0930817774655c333bab92426f0766d6b27b96fc169a19239c1a7dbb1c888. 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/GBKQU1674398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13639bd4bb34101241fdec969483bd2aca2ad97d505f07ce2b2af4d53220f2. 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/ITI021700528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13639bd4bb34101241fdec969483bd2aca2ad97d505f07ce2b2af4d53220f2. 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/ITI021700528.
Soulful House Tributes Vol.2 (UnforgettableSongs Revisited InSoulful Deep House)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9d4220607f64bf776b650cf7da5377e6dea13a781aeb35dd62d0cbeb77e676. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ITI022100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d84a04e2f6e5f5b0800a8ab61c0d4a144db6442f7095072a83580503afb2ed. 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/ITI022000518.
Apericena Bologna Centro (Trendy Music for the New Italian Aperitivo Time!)