Chitarra can refer to: Guitar, modern string instrument Gittern, medieval string instrument Spaghetti alla chitarra, a variety of egg pasta
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 0x7c3e21ce329c1df3d7ee19bdd289d0306900d5c0f37b0d3e0c2796a35d7b8155. 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/70dbe2f4-1391-4057-a0ad-75f224d0fd98.json and https://artists.proofprofile.net/proofs/artist/70dbe2f4-1391-4057-a0ad-75f224d0fd98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corde Serene: Musica Rilassante per Chitarra
Corde d Oro: Musica Rilassante per Chitarra
Note Nascoste: Musica Rilassante per Chitarra
Dolci Corde: Musica Chitarra Rilassante Strumentale