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 0xa70b4f4d31db504c0c81a1e40ead76f658a6762df907b5d5db931304d8c6cf55. Chain 2 (Bitcoin): anchored in block 953918 (2026-06-16T08:55:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1af2cb19-cf00-422b-8677-5e4d8edc8aa4.json and https://artists.proofprofile.net/proofs/artist/1af2cb19-cf00-422b-8677-5e4d8edc8aa4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
강아지가 좋아하는 산책 음악 BGM (Walking Dog Music )
Playful Whiskers(장난스러운 수염) : Cute Background Music
Happy Playtime Music Collection for Kids
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x3b4233b74dcc5a68d55b6c472b9f409f4e8f966ce2b4d73f59e9dff3550179dd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB922301267 — a six-check JSON result.
A Sea Voyage (Fusion Korean Traditional Music)
Best Lullabies For Babies To Go To Sleep
A Collection Of Calm Music Box Lullabies
크리스마스의 종소리를 들었네 (I Heard The Bells On Christmas Day)
우리집에 왜 왔니 (Why Did You Come To My Home?)
Collection of Lullaby Lyrics and Bedtime Songs