Aage Tanggaard (born 25 February 1957) is a Danish jazz drummer and record producer. A pupil of Michael Carvin and Ed Thigpen, he has been a member of several notable bands; including Radiojazzgruppen
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 0x2110c9c19b6dd5e8e9ab5e40df8a0b63a94676982df7e190727ad6fef5715111. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b8f3272-f1d2-4fe8-8653-a20829e6d99c.json and https://artists.proofprofile.net/proofs/artist/2b8f3272-f1d2-4fe8-8653-a20829e6d99c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).