The leopard (Panthera pardus) is one of the five extant cat species in the genus Panthera. It has a pale yellowish to dark golden fur with dark spots grouped in rosettes. Its body is slender and muscu
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 0x31735e96c47ba34abd7dca9a128409a3588a05f22137f21ad22fae65aa636576. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a25c5e91-f202-46da-98ea-50a6e03938b1.json and https://artists.proofprofile.net/proofs/artist/a25c5e91-f202-46da-98ea-50a6e03938b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
AcousticGuitar sound (Strokepicking version)
AcousticGuitar sound (Fingerpicking version)
AcousticGuitar sound part2 Fingerpicking version