Walter Junior Cabral Bueriberi (born 25 September 1995) is a professional basketball player who plays as a power forward for Liga Națională club Craiova. Born in Spain, he plays for the Equatorial Gui
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 0x8ee1aa3722f894f32b28ca66039fa60e843d15e76ae24a093a747f21966fb96f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8415f182-6e17-4071-b8bf-bce290e7f3b9.json and https://artists.proofprofile.net/proofs/artist/8415f182-6e17-4071-b8bf-bce290e7f3b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).