André Luiz Geraissati (7 September 1951 – 19 November 2025) was a Brazilian guitarist. He played with Grupo D'Alma, Egberto Gismonti, Bobby McFerrin, and Wynton Marsalis. Grupo D'Alma From 1979 to 19
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 0xc35a39222b0670fff9dd4ee928dad821ac3fc6ea9e0c6db72ad31de80fe55b1b. 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/72e1a19f-ba98-4829-a062-ce8bbf4c5aa0.json and https://artists.proofprofile.net/proofs/artist/72e1a19f-ba98-4829-a062-ce8bbf4c5aa0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).