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 0xa118000e8aac772aa375579dac670f75a17b4f0e57d4d294fea65ab13103de5f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86fa11e2-99e3-4ba9-af55-235278829fbf.json and https://artists.proofprofile.net/proofs/artist/86fa11e2-99e3-4ba9-af55-235278829fbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baby Chill Out Night & Day (Relaxing Lullabies That Helps Your Baby to Calm Down, Sleep Well & Dream Sweet Dreams)
Baby Chill Out Night & Day (Bonus Version Incl. Schlaf, Kindlein schlaf; Twinkle, Twinkle Little Star; Frère Jaques; Mary Had a Little Lamb; Still, still, still)