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 0x69130a3031e03c15c7950977ffd42cf68f31241c2a6738626360ce6660ff6d38. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bffa84a9-b08f-4030-81ee-104524094dbe.json and https://artists.proofprofile.net/proofs/artist/bffa84a9-b08f-4030-81ee-104524094dbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brandon Evans – Elliptical Axis 5 - Quintet NYC 1998
Elliptical Axis 179a (solo alto saxophone) Lawrence Public Library
Solo Sopranino Saxophone - Public Library, Nov. 2015
Elliptical Orbits, Axis, Ellipses, & Ellipsis (One)
Music for the End of the World Day Three
Solo Sopranino Saxophone (Lawrence Public Library 2015)