Follow the Cipher is a Swedish symphonic power metal band from Falun, formed in 2014 by guitarist and songwriter Ken Kängström, a longtime Sabaton contributor. An early line-up featured bassist Jonas
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 0xb678490a1ef633614419b27047f1e9a13996b477c643de8a3348b665cab7989e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6de0586-f139-494e-af99-c2efc77c43c5.json and https://artists.proofprofile.net/proofs/artist/f6de0586-f139-494e-af99-c2efc77c43c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).