thumb|right|Jan Kochanowski with dead daughter in painting inspired by the poet's Laments A lament or lamentation is a passionate expression of grief, often in music, poetry, or song form. The grief
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 0x4df9e744a7b35a7e64e07db64be7c1312d0368a677c76f5ccf7ce980f9d24776. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3ddc3cd-8e50-4181-9293-447a7e2cd5d8.json and https://artists.proofprofile.net/proofs/artist/b3ddc3cd-8e50-4181-9293-447a7e2cd5d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Through The Reflection (Special Edition)
Sippin' Liqour with a Grin on My Face for You