Anthoni van Noordt (c. 1619 – 23 March 1675) was a Dutch composer and organist. Born in Amsterdam, where he lived throughout his life, he was the brother of Jacobus and Jan van Noordt. He became the
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 0x60ab140ba1eafc1a3f8fb59a91b4703b21a012b3c23446205419ec26b56ddbe9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c700b92-e5cf-4e1c-9cd0-ada65993ff82.json and https://artists.proofprofile.net/proofs/artist/7c700b92-e5cf-4e1c-9cd0-ada65993ff82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tabulatuur-boeck van Psalmen en Fantasyen (Selection)