Angélico Vieira (1 January 1983 – 28 June 2011), whose full name was Sandro Milton Vieira Angélico, was a Portuguese actor and singer. He was a member of the Portuguese boy band D'ZRT. Angélico 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a55c044dfa80784c6ca429d39cde0a9286eb32fa7b43370f06f35d2141fe4f3. 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/56986b2b-f635-4fb6-a2d5-d34fedd80d82.json and https://artists.proofprofile.net/proofs/artist/56986b2b-f635-4fb6-a2d5-d34fedd80d82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).