eJay is a series of musical arrangement software, and video games, primarily for Microsoft Windows. The first edition, Dance eJay, was released in 1997. It supports eight tracks of audio and, as with
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea4cf69dabc6c357bbfbd9b70e3817968efcde915dc11001d70f39199e10112. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a43b152-a23f-41e0-819e-86ed5b9166a4.json and https://artists.proofprofile.net/proofs/artist/7a43b152-a23f-41e0-819e-86ed5b9166a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).