In Nordic folklore and mythology, a fylgja (Old Norse: , Old Swedish: fylghia, older Dalecarlian: fylgja) is a supernatural being or spirit which accompanies a person in connection to their fate or fo
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 0xd4b6d26f4d076264d2786ab96191b63a49d037dd72e894368c0d4f50889c51b1. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7d03d6a-aab6-4989-b61b-cc009d7b3478.json and https://artists.proofprofile.net/proofs/artist/d7d03d6a-aab6-4989-b61b-cc009d7b3478.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).