Whitelines is an English language legacy print magazine covering snowboarding culture, now published solely online. It was previously published by Permanent Publishing, Factory Media and Any Day Media
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 0xf2fbfffdf55d06572686253b2273d1565e07bc9360f0af93ef84a2fb9d5cf2fd. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f58a3bd4-b0d4-45ac-9629-2543982a1951.json and https://artists.proofprofile.net/proofs/artist/f58a3bd4-b0d4-45ac-9629-2543982a1951.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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