Henriette Bonde-Hansen (born 1963) is a Danish operatic soprano who made her début at Den Jyske Opera in Aarhus in 1993. She has performed at opera houses throughout Europe as well as in Canada and So
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 0xe7092fe1dcb7e6f56e8da3831bf5fe8ae19597787dd2a77afa996d68eaba56a0. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a521ebee-d28b-48f9-83fd-2e9f4558af17.json and https://artists.proofprofile.net/proofs/artist/a521ebee-d28b-48f9-83fd-2e9f4558af17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).