Jorge Dalto (July 8, 1948 – October 27, 1987) was a pop, jazz and Afro-Cuban music pianist from Argentina, and the former musical director and keyboardist (together with Ronnie Foster) for George Bens
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 0x3ebdb57ca6993f6c1e523bf345e57b2b5c98a50e2571cafdb35d15e9dfb43f36. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/515416e2-57fd-4d96-aa04-b6172207a921.json and https://artists.proofprofile.net/proofs/artist/515416e2-57fd-4d96-aa04-b6172207a921.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Solo Piano (Grabado en Vivo en Argentina 1983)