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 0xa7daeb2341b9808f317dd5a2e13e5f4b36f1b05316fee763928d58a3f9473e8c. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7fbf27c-dc4c-410a-9922-0446d0c85b9c.json and https://artists.proofprofile.net/proofs/artist/f7fbf27c-dc4c-410a-9922-0446d0c85b9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In Daddy's Arms: Father’s Day Lullabies – Piano Melodies To Go To Sleep, Relaxing Bedtime Tunes For Sweet Dreams
Piano For Babies: Super Relaxing Melodies And Soft Sleep Music | Brain Development, Emotional Intelligence, Positive Vibes
Pregnancy Music For Unborn Baby - Soothing Music For Brain Development, Fetus Relax | Soothing Heartbeat, Motherly Love Melodies
Piano Lullabies - Beautiful Piano Music for Sleeping And Relaxation
Sleep Tight, My Baby: Calming Lullabies for a Peaceful Night
Mother Earth: Healing Earth Frequencies for Kids’ Relaxation and Focus