Stefi is a feminine given name. Notable people with the name include: Stefi Baum (born 1958), American astronomer Stefi Geyer (1888–1956), Hungarian violinist Stefi Talman (born 1958), Swiss shoe
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 0xdea6180e7d0d8dc1d7f34660c59d12b064d9e805f4ab7d76dac709ce353ba3e6. 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/90ecd578-a808-47a2-b38f-c5ac65fed50c.json and https://artists.proofprofile.net/proofs/artist/90ecd578-a808-47a2-b38f-c5ac65fed50c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).