Alessandra Marianelli (born 1986) is an Italian soprano. She made her professional debut in 2002 as Barbarina in Le nozze di Figaro and went on to sing leading roles in the opera houses of her native
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 0xdf90050c8d3c5f750e95b166727bd0529714d56f191c680e2e014a06dc4b1096. 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/5ed90ac9-5992-4d21-b3c6-f1ccc7c6a5a2.json and https://artists.proofprofile.net/proofs/artist/5ed90ac9-5992-4d21-b3c6-f1ccc7c6a5a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).