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 0xe67b1aadfd74764caa0862fb4872e219897d793839192367e374c26ecf204d5e. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d9e9089-559a-4538-9275-96c5de4ac76a.json and https://artists.proofprofile.net/proofs/artist/1d9e9089-559a-4538-9275-96c5de4ac76a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
dosukoi！kenkyonidaitan/ramendaisukikoizumisannouta/nennihanen (neniri ver.)
ドスコイ！ケンキョにダイタン/ラーメン大好き小泉さんの唄/念には念 (念入り Ver.)
桜ナイトフィーバー/チョット愚直に！猪突猛進/押忍！こぶし魂
サンバ！こぶしジャネイロ/バッチ来い青春！/オラはにんきもの
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 0xd81079e13a6fb7affad9aa3abe1eaace6ad71586059d69fdae2dee4e55691d99. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:47Z), 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/JPA601600034.
シャララ！やれるはずさ/エエジャナイカ ニンジャナイカ
EIGA&BUTAI[JK NINJA GIRLS]ORIGINAL SOUNDTRACK
映画＆舞台「JKニンジャガールズ」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c57d4dc071ff613d842cc8e5358c6dfee0f56a20d6d1a8342de0f7ed9da17bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPA601900329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce83e94cc486f50a5890ac68000d76d4a206c5907bd780489bfbbfdd3004bf. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:23:43Z), 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/JPA601800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0347eb90903f16c15a874ef8ffdaa129853b804a73d915ed9c8ff9623f818f4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:20Z), 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/JPA601900330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44816b61aa11098f530b491e6f72bb7395e663842bf420b4f1298aefdbad9fe4. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/JPA602000051.