Lutsharel Emiliano Geertruida (; born 18 July 2000) is a Dutch professional footballer who plays for club Sunderland, on loan from club RB Leipzig, and the Netherlands national team. Mainly a right-
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 0x7337cf8ccb2bbd75c8f62ba698a421d0f125dd0f00b9a233f669d65cf873899c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60f85dc2-6d46-41ae-80e7-0991d2f51555.json and https://artists.proofprofile.net/proofs/artist/60f85dc2-6d46-41ae-80e7-0991d2f51555.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).