S4N was an American "little magazine" that was published from 1919–1925 in Northampton, Massachusetts. In its earliest stages, editor-in-chief Norman Fitts described the magazine as a "discussion of t
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 0x1c986aa64307a3019a3b27fa7d4e2e699fe2da1b5dbdc5ae6449993c9cddd8ce. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7946913d-83b0-4fe5-b7c8-2c1e078fd922.json and https://artists.proofprofile.net/proofs/artist/7946913d-83b0-4fe5-b7c8-2c1e078fd922.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).