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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447362e1ac276647ba831525459f17c0f839e91170173bf98e1e9f402cf0971c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e88e35c7-5623-468c-a2ab-a134ded0afda.json and https://artists.proofprofile.net/proofs/artist/e88e35c7-5623-468c-a2ab-a134ded0afda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Holiday∞Holiday / Tragic Drops【スリーズブーケ盤】
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410d045bbde1f14f7644aabee529f127f7758e0fbcef0d259ed3b77e66ea6057. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPI102300072.
Holiday∞Holiday / Tragic Drops【DOLLCHESTRA盤】
Holiday Holiday / Tragic Drops (DOLLCHESTRA盤)
ハナムスビ / バアドケージ / ジョーショーキリュー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8c6cb80285ae0ed99af2750118cdc986a503ae346f74bd42f36e715f044a82. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/JPI102500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841baa9fbde59d67ade2403a3f99a4006288b3876b9c25cc0a27ddbf88047b8a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPI102500202.
37.5℃のファンタジー / アイマイメーデー / BLAST!! / 十六夜セレーネ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604105c03bd2cebc2934415446eba581e26b89863ff61767c4c23c604aa28149. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPI102501319.
可惜夜花火 / ブルウモーメント / Very! Very! COCO夏っ / フュージョンクラスト