Thomas Wlaschiha (born 1973) is a German actor. Internationally, he is known for his roles as Jaqen H'ghar in the second, fifth and sixth seasons of the TV series Game of Thrones, as well as Sebastian
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 0x17d032f859013596ff473b8413dc776e984489ef297b553ac3a9fe176f2986d0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77c4699f-3bb3-4a5e-8d4b-2fea033008fd.json and https://artists.proofprofile.net/proofs/artist/77c4699f-3bb3-4a5e-8d4b-2fea033008fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).