Federico De Robertis (born 5 June 1962) is an Italian musician, composer and record producer. De Robertis was born in Lucca, Tuscany. He composed the soundtrack for many movies by the Italian director
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 0x9fc013c6683c14183a83768d69b619063c7dba0f7128f79159a1c184d702c756. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b406366b-2860-4687-84bb-61291a6bb1ad.json and https://artists.proofprofile.net/proofs/artist/b406366b-2860-4687-84bb-61291a6bb1ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Area paradiso (Colonna sonora originale della serie TV)
Il Ragazzo Invisibile Seconda Generazione (Colonna Sonora Originale)