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 0xf7f1104d5957d2d2b649f37c864ca2679e94c766646ef2b598c56bf6355823cc. 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/8c8b23f8-b965-46cb-b120-f6e0a44ab9d6.json and https://artists.proofprofile.net/proofs/artist/8c8b23f8-b965-46cb-b120-f6e0a44ab9d6.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 0xe98d8bef3b30931af4b0baa6038188106d218663f973d6b25885cce68724be2d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPCR02204580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165b211618ce08e16d2f8b94a04f85cb2d3d6e09f399147c96201a44ce6774af. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPCR02303020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f42f84bb314ce315b77e2f631c750cc33fb01ed0e3739ed2c1ed61758fb5c6. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPCR02303030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc51c08d791ccd72baaa6e83bfeb1bebf08dabb48f244e42553ec34b23f753b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPCR02303040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bdb1ec9c648ab7565511a34bc8a43ef2f810003c220933d53d4f4a08e7704c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPCR02303050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08da3e8819ec4c5497bb763c11ee42affb23500881d6b1769af06c268a60a6f2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPCR02303070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5576076f82c035ed26bdc3adf4f4947aec047d92bd1f2211ae2a792e418fa2d7. 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/JPCR02303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb115ca0809daa4795dd59e50a5e4c32e8c1ddbeabd28a1176171b86911c444c2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/JPCR02302780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280bcb417e4200997b9d8c2b6e56c58530f0e35701f67a9da7f9c19899e2d883. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPCR02302790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d7d3d6835a86a85d9edaf153cbc03d1e81e4eac0282b5153b78ba26117eb74. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/JPCR02306270.
木村徹二 ファーストライブ～ファーストアイアンぶちこむぜ！～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46bde5d0eea35eca9044ba2cfd980b8840db8b9ddcac22342f8ee76d907106c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPCR02306580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ecd911a2633047f85f845464d4b8bb9f2f180b0d9d28402651bb1ee55a2fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPCR02306600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987ae7cb7ec3674fc83239d180052d41981643e8c72dad9cffd8d152ad1d7a9b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPCR02306610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef494de8324590ba40f5f433c50e219078ed59d6546288fb85afe8687f9a79a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/JPCR02306620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46da20b1aa3e2f564f33ffe4ab5d7cc7792d8fee2e268c06a0b2737211d353d4. 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/JPCR02306710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf5c8b6ca51d3a9520e7829563e1193ef606d990654899641e77cf1f4b60fa. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPCR02306760.
みだれ咲き／男の拳／ハマナスの眠り唄 (アコースティックver.) 【特別盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6b4cb9cbca8c67ac5be1ef08a00bf38faa5230dc972c030473e3bc89ccced5. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPCR02402120.
ハマナスの眠り唄 (アコースティックver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234bc204e91f65a4266d7b054074d29ce18f8345afcc5fe726d896915c0a12b2. 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/JPCR02402130.
ザ・カバーⅡ～海とか山とか旅とか酒とか～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f53c85d82f806860889cb4a96d63f8b6e503aee4fa5253bd1f155a3c81a7e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPCR02404830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ea24171b00ee742a4df91003e23c425a484f9a873489b0c5bd5a74b84c8c8a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPCR02404760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137f7f7c7232cd7166f9e4696784579a1237e07e76ea77968fb1cac92f5f83ee. 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/JPCR02404820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb467151c50932d70e13034ecb06028c08ba6313e1a83da9c62d7cce3a9b2de6e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPCR02404720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a470dc0d5029442ed9c13cf6f548b8a6477e1cd10e66d9aff2d85da74682f30. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPCR02404750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6975cbe91b474af87e61878ebfc99cba61237f7ef5eedbaca591e217e09d97e. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:47Z), 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/JPCR02404810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1641b689144844ffa4e2aec46ebace199b3396cf5a982bdbf76306e10525bac1. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/JPCR02405900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e26bef388fbe64978d7dc738018d1500d92a89900d11d82059a138976b246c7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPCR02405910.
ザ・カバーⅢ～すいません！アイアンマシマシで！～