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 0xe4072a8a7fa35c77ccb16396de51a6d6b98069156a3c3d6794d40617c231c67f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67a56b72-2ca1-4606-9c02-77275d158d34.json and https://artists.proofprofile.net/proofs/artist/67a56b72-2ca1-4606-9c02-77275d158d34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
집중할때 듣는 감성 피아노 연주곡 베스트 (숙면, 카페, 태교, 명상 음악, 독서, 공부, 자장가 명곡 모음)
카페에서 듣는 감성 피아노 연주곡 베스트 (숙면, 카페, 태교, 명상 음악, 독서, 미술관, 공부, 자장가 명곡 모음)
미술관 갤러리에서 듣는 감성 피아노 연주곡 베스트 (숙면, 카페, 태교, 명상음악, 요가, 독서, 미술관, 공부, 미술관, 갤러리, 자장가 명곡 모음)
Granados : 12 Danzas Espanolas Op.37 - IV. Villanesca (그라나도스 : 12개의 스페인 무곡 작품번호 37 - 4번. 빌라네스카)
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 0xf341c935a9221b355b2ec896ad23fa49f26e781a069f7ecc4d941244e14d8eac. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012147997.
Grieg : Lyric Pieces Book II. Op.38 - IV. Halling (그리그 : 서정 소곡집 2권 작품번호 38 - 4번. 할링)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4293d74e83eb28916a05f2dfa8ffd5d29140e36e83330a594a392d9369a1299. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012148002.