Massimo Di Cataldo (born 25 April 1968) is an Italian singer-songwriter and actor. Life and career Born in Rome, after the high school Di Cataldo made several experiences poised between singing and
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 0x05f1f0639010703e9e4e4f5cce99afafdf22438ad8a63cdad891d4789f10a7ba. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47071cba-e9df-40cd-97ed-5935261ddfc6.json and https://artists.proofprofile.net/proofs/artist/47071cba-e9df-40cd-97ed-5935261ddfc6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).