Flakk is a village in Birkenes municipality in Agder county, Norway. The village is located on the western shore of the river Tovdalselva, across the river from the village of Birkeland which is the m
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 0x6dbbe5272cdff91f62c4a43574610cd1e54898bc0e0d33100dfddb709b697841. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04e1ab23-494a-4fb1-acfc-75b91fe9ec22.json and https://artists.proofprofile.net/proofs/artist/04e1ab23-494a-4fb1-acfc-75b91fe9ec22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).