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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b2d41c969ce0b0c31fb278c0e5062f360199edb077388c89d5026227cf6098. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d63cea17-e67d-48f6-b5fc-0e3347805072.json and https://artists.proofprofile.net/proofs/artist/d63cea17-e67d-48f6-b5fc-0e3347805072.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le origini de I Cantori Moderni, Vol. II
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1dc7d14395a1f9df772e44abad9ed5cff6fee123d94907dda300e129f70f53. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ITRKI1803870.
Night Blues - From "Gli imbroglioni" / Remastered 2022
Boom! Italian Jazz Soundtracks At Their Finest (1959-1969)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb4fa793c4f64fe4171c1a8a2ebc237e9a90538bbc1a52a4bbaee18c2cdb35. 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/ITC002101141.
Baoh Baoh (Long Version) - From "Peccati d'estate" / Remastered 2021
RIVIERA BELMARE - Summer in Versilia, Italy 1960s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245549904bca5cdd309095b0aabf2fcb70040d9e61fdc50c9d1ffa055174eea2. 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/ITC002100599.
Ahi ahi ahi (Versione Alternativa) - From "Peccati d'estate" / Remastered 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7e4b2955f356d97d29830152d69d469a4cfd56978208ccb63aaab76daa2c14. 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/ITC002100609.
Chill With Jazz – International Jazz Day 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde2a2c8ec61c6b505aefba7b5e29fd8da6fc3346ef9b004cc295aacd0741b5. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/ITC002200439.