Iceman, The Iceman, Ice Man, or Ice Men may refer to: People The Iceman (nickname), a list of people with the nickname The Iceman (performer), comedian and performance artist Ötzi the Iceman, the
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 0x8f7c05393fd461b04edbf2ade91465beb19f66b1997ec0ab56606e0639b8670f. 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/c931fdf9-8c37-4111-8a71-3f78ae315859.json and https://artists.proofprofile.net/proofs/artist/c931fdf9-8c37-4111-8a71-3f78ae315859.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).