Zam or ZAM or similar may refer to: Places Zam, Burkina Faso, a town Zam Department Zam Rural District of Iran Zam, Hunedoara, a commune in Romania Zam (river), Hunedoara County, Romania Zambia, IO
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 0xb82f6d80fc96fad7f25d54dcfc110944601cd03b618e8283731f47035bbde615. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c45f9b85-a3b7-4617-a42b-c91ce811262a.json and https://artists.proofprofile.net/proofs/artist/c45f9b85-a3b7-4617-a42b-c91ce811262a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).