Maximiano de Sousa (20 January 1918, in Funchal, Madeira – 29 May 1980) was a Portuguese Fado singer.Richard Elliott -Fado and the Place of Longing: "Loss, Memory and the City " 2017 - 1351567314 Page
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 0x615f6c9a8f1d8196bb07044d422eb8b7dbbe01e0bfd06ea56bcb7a0df51bc983. 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/514e899f-43ea-4296-b0c0-4765d1e004e4.json and https://artists.proofprofile.net/proofs/artist/514e899f-43ea-4296-b0c0-4765d1e004e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).