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 0xc091dde4fcdeacd03805e9317feb0e6c1965fa6ea499c739c3f086b8adfc973b. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/894b966e-8f74-4776-a5ed-c9adb717b773.json and https://artists.proofprofile.net/proofs/artist/894b966e-8f74-4776-a5ed-c9adb717b773.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5583142d4d22f2a6a016bd30bf3e01526c11b00349b1b82aa07d8f2c72e6658a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPVP02211201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153736b94ab8bcefb9ee88e6a8520f41e836ba2bd17c1a6d8a470583dfc3c4b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPVP02211205.
ドラマ「オールドファッションカップケーキ」オリジナル・サウンドトラック
映画「東京遭難」オリジナル・サウンドトラック
アラビアンナイトヒーリング オリジナルサウンドトラック
Drama ”LIVING WITH HIM”Original Sound Track
ドラマ「ジョフウ 〜女性に××××って必要ですか？〜」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495670d579d8f9cb98dd352fdb44705ac7c0b7e1ef11d5691ccace7003f76712. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPI2582905.
北海道ヒーリング ～おなじ星空の下で～
ORIGINAL DORAMA W-30 My murdered husband has returned. (Original Sound Track)
連続ドラマW-30 「殺した夫が帰ってきました」 (オリジナル・サウンドトラック)