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 0x615d58381dd00ffcd95093be770ed22fdb469ee45cdd58550de1f211f5e04b50. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a8268e8-1387-4897-95ac-5b9f75bb4699.json and https://artists.proofprofile.net/proofs/artist/6a8268e8-1387-4897-95ac-5b9f75bb4699.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ce n’est qu’un début (Canzoni dallo spettacolo "Un po' dopo il piombo")
Guardie e Ladri (Racconto Musicale - Rimasterizzato)
Le canzoni del signor Dario Fo (with Paolo Tomelleri Jazz Stars)
Maledetti Francesi (feat. Ottavia Marini)
Canti Ribelli (Giangilberto Monti interpreta Renaud)
Paese di piazzisti (feat. Ottavia Marini)
Françalien (Gli anni d'oro della canzone francese)
FRANCO CALIFANO: Il Prévert di Trastevere
Domani si vive e si muore. Inediti di Michele L. Straniero
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 0x97a3cde5e51edacfb7e6b841836e93b3b6de0454b1a9fa62b5f1f83c3f6c29ff. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITO512303610.