Safia may refer to: __NOTOC__ People Safia (given name) Places Safia, Burkina Faso Safia, Yemen Safia Rural LLG, Papua New Guinea Biology Safia (moth), a genus of moth Music Safia (band), an A
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 0x7b12dc3080cf2d8e22a0bce9854530e931ea57ea5808fecc7b5653eb15694acc. 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/5e1de527-68ea-4d65-9253-7132af1372c8.json and https://artists.proofprofile.net/proofs/artist/5e1de527-68ea-4d65-9253-7132af1372c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).