Walter Valdi (stage name of Walter Pinnetti; 20 August 1930 – 13 October 2003) was an Italian singer, songwriter, author and actor of several songs and theatrical pieces in Milanese Dialect. He was b
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 0x16ecb5f1c0d79f544fa339997360d4c9bcd1af4469e39c5eaa91d479c988faf0. 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/598505bd-cd88-4ec1-a368-37ecaf170724.json and https://artists.proofprofile.net/proofs/artist/598505bd-cd88-4ec1-a368-37ecaf170724.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).