David Carneiro Dias de Rezende Bruno (born 14 February 1992) is a Portuguese professional footballer who plays as a right-back for Liga Portugal 2 club Torreense. References External links Category
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 0x8841b1e71cb4af1dbd4da4635360b3f45ec939e4e9001ef2ab3c1ca51ece128e. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a258b25-9e25-4873-9af0-aefe8c45bbab.json and https://artists.proofprofile.net/proofs/artist/7a258b25-9e25-4873-9af0-aefe8c45bbab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).