A slacker is someone who habitually avoids work or lacks work ethic. Origin According to different sources, the term "slacker" dates back to about 1790 or 1898. "Slacker" gained some recognition duri
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 0xeac160bacee2944fe7ce2f7c62a111208cde2f70df2af4a6f0eb9dcbfc224e52. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a93d7e6d-acb0-42ba-a937-38b0369660ac.json and https://artists.proofprofile.net/proofs/artist/a93d7e6d-acb0-42ba-a937-38b0369660ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).