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 0x1f86d84c1bc8bc785febef676753a83ff18222eef9515fb804512404930b7b63. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a911d5a0-e3bb-43bf-b2e6-267e2c89de39.json and https://artists.proofprofile.net/proofs/artist/a911d5a0-e3bb-43bf-b2e6-267e2c89de39.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd33d4c784e975a9d40050673f2b4784e4bd1b2ed6228154903812e4eac15553. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPO2112447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1629cb23c3879ad9b6a96796112ff6c319faad6ef928f0463c214f5bcc6e13. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPR2295504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6c09aac283218929df22cdc19801a676465ef3bcd3ad863d6ada2a6772ffc. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TCJPT2261995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e93c214dad3294ccf8728adeab056178a11ac30f750efc8fe88147e2b0cbe31. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPT2262525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efeee40fb9c5227c85a9b74b306ddd91080a4bb2e0e0245c7d9d4ef1ae10f9b. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/TCJPT2262527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699ceaf29b28ffff12b5abca1877658caa5472bd97d8630e4748108e6db08a4d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPV2386273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb639b0d0c6174e0c9a04797ecb0be9ea5726dc57f0e0e99ff4003b670bd402da. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPW2368298.
ダイヤモンドラスト・ホッカイダ (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e6000cfed6ed013d95df4afb43c53ce689ac6dd09a8b9b77f4d5284dca0ed5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JP92Q2302054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4371be477b12dc527cb1ce086a3d11731505af215536756d01803e6eda215f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JP92Q2302056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1229b113f2ee4d7410ed34da9293c6ec47e0a57bfd50cd68f90659629efc0e10. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JP92Q2302057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818ebbaf733c881a38ec681fc4d6b4186df932fd100e623c75262267ed57995c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JP92Q2302058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6539e33b8f325ecf8877d52d91e9ad6e92fd2b267435ba9e30592f7959436. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92Q2302059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dbca7fbcdd62e4af74da269d3d971c129d347e29b0245a0697cc87245d4310. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92Q2302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace8ade2ea04995a1adfc092eaf440ef09201e9e1a62b738a91cbb63b13618a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JP92Q2302062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c1e42e67e510e34e54ec666a22525caa2b6242b5e5ccd6cd2948d28fb8a2ff. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JP92Q2302064.
模範解答実験室 (feat. 可不&歌愛ユキ&ナースロボ＿タイプＴ（VOICEVOX）)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3784e564485c81c76e32b6c98b7b69b646ef36dc3bb8d6d5da4011dc4095355. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/JP92Q2400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f18c652efccf72eb2946ea835bda572eebde83573a35bf2def4ffae33e7001. 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/JP92Q2400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ec034d8bfad3666c6b9cbc6f8339e9e34c9ddab524e2aea3b932a619c4e00d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JP92Q2400978.
ヘテロディスコ (feat. 鏡音リン&鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfb3309d6cf62cffa25a5acfd20e4ebb0f4f638f23a14eb9ffefc22412f6a9e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:00:07Z), 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/JP92Q2400979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f231435879a6b7312626c0ec975425a8c016639ca4daff7ed1e4482a224544. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JP92Q2400980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e1711435603c4ac8783909067e14c6c8ad6e62e69457910086f77f9fc572ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JP92Q2400981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1190a96a335a8281a665b69aa6c92cd2b25d0a50a48f5c641a1afa6f5beb0c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92Q2400982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9455733ca3a3a50fc242c6c791644f5ed1043c73224cefd2b68fc2603ecd69a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JP92Q2400986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99d3606bc92ab26ab6d36d8ffafdce1c92d489f98961bbc4282278886870094. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JP92Q2400987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbf0877baf8c4ff514ae8a7a4eda046f075003863e1cedcfccd5de1fba1711a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JP92Q2400988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4844f5b8073e112d2e1354baadd412e4248f47476c628dd5e52583308ddf00ad. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JP92Q2400989.
極彩色 (feat. 初音ミク&鏡音リン&鏡音レン&歌愛ユキ&重音テト&v4 flower&心華&小春六花&夏色花梨&花隈千冬&可不&知声&Ci flower&ゲキヤクβ&カゼヒキβ&ナースロボ＿タイプＴ（VOICEVOX）)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03371ff77d927a7324f2ddc5d37841eb1a901696632f260a403629ab9f93187. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:57Z), 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/JP92Q2400990.
あなただけのアザレア、或いはクオーレ (feat. 初音ミク&可不)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8107333547ee4a0af19ab40410cd27ec9b58df9cd95171ad7b2d96fb3a6a82. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JP92Q2400991.
VOCAMIX -VocaTECH & EDM Selection (Mixed by Shu) [DJ MIX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8db81670fe30e6c05befa4dbd8fc253094d3c8882f7a40527ff6b249a8019f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS532400778.