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 0xd43e2417ad53a2fc2dfeddb5f48c894ba3b731004a7d73f00a4be1933c419038. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ac19825-86dc-4363-91af-cf4eab552cdb.json and https://artists.proofprofile.net/proofs/artist/2ac19825-86dc-4363-91af-cf4eab552cdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Calming Lullaby Rhythms for Restful Baby Sleep
Jazz Piano's Soothing Serenade for Baby's Sleep
Mountain Melodies: High Altitude Baby Lullabies
تهويدة برامز وحلقات صوتية مطرية ذات ضوضاء بيضاء مهدئة
Lullaby Harmony for Baby Sleep: Tunes for Peaceful Nights