thumb|Image of Thelma Buabeng Thelma Buabeng (born 31 March 1981 in Ghana) is a German actress. Life Thelma Buabeng grew up with two siblings in Meckenheim (Rhineland), where her family moved to
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 0x66315f9bf734b7343d52284a72cd6c834eb38dcd5cff6a38ad43afb54fba7578. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd04ddf2-ccb6-49a4-8f27-d3f6432e21e1.json and https://artists.proofprofile.net/proofs/artist/dd04ddf2-ccb6-49a4-8f27-d3f6432e21e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).