SAF, S.A.F or saf might refer to: Companies SAF Tehnika, a producer of digital microwave data transmission equipment Strip Art Features, a comic book publishing house Svenska Automobilfabriken,
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 0x9eccdba5a098a2c4cf440ee9715c7aa4c53a8cc8c6cffd9fb7478ff522a2f5fe. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d38ec5ea-cdae-4bbb-8804-1361ddfb8006.json and https://artists.proofprofile.net/proofs/artist/d38ec5ea-cdae-4bbb-8804-1361ddfb8006.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).