Jason Euringer is a Canadian musician. A guitarist/vocalist and bass player, he frequently appears on recordings by artists in the Kingston, Ontario scene, including Weeping Tile, Sarah Harmer and Lu
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 0xa559ca4f5a8fe1f99ef88efc43a551c08f9c418a317442570dbbe563d88ede5a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98132b0c-ceb4-43c3-8cba-008ce3fdd034.json and https://artists.proofprofile.net/proofs/artist/98132b0c-ceb4-43c3-8cba-008ce3fdd034.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).