"Jungle Bill" is a song by Swiss electronic band Yello, released in August 199245 Cat - Yello - Jungle Bill by Mercury and Smash Records, as the third single from their seventh album, Baby (1991). 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 0x2ec9ff9be986384b0dd15d1c9f5c9bf8dbb2c1371361411eac709cea23014118. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ea8689c-e46e-47d3-993d-a363ede6f8a4.json and https://artists.proofprofile.net/proofs/artist/4ea8689c-e46e-47d3-993d-a363ede6f8a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).