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 0xed30fd6465491040fca3d71a25569e37d0beeaecfcf76d30d48b055bf33db808. 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/105308c4-586e-44e8-aa2d-899afe698bc6.json and https://artists.proofprofile.net/proofs/artist/105308c4-586e-44e8-aa2d-899afe698bc6.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 0xb042d7627636d37ea00116f800bda2dadcbff0f53a5cf7db4223b4153bf33ff3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPB601403685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e09204eb7f827341b0b9475bd62a5384892c608f4e7adb48ac8de36513dfc54. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:16Z), 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/JPB601403686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ace15102c8d9f746425440934ae0bdfaf085c996b20c011bbedd969b970592c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPB601403690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301ebbd128d009dff8adc368813367c73dfecaf72a595f2df6b13411ae87b07. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPB601404314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d209b693588c3c3af9ddf13296ae5b876c81c164dc9c5fcaf0805efeabfe695. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPB601405075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42014346358e368fd247fcc77a13bb8eff449b2533112e36966863eb669ccb9c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPB601405065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2297890c616b9b5b06ec0e9c4b058a416a1f691fc0dfac7c75df4b362308d36. 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/JPB601504469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e14dc2d22b5a7f35576dc81729fe1e39848eaf30cd471af82a3cf5991ac34. 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/JPB681601974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc2fad27702862260b52d77ed30f19c91a317f14d02663de428480f7c410ff. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPB601601558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec226adeeb363b10cb723e447c876d4e69aaf1a667c4bcdf3e8d93c53b4ae21c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPB601602761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e33905952d187a4f78488443b1fa06fcbed9ac66375776cafdd00462fdbef0d. 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/JPB601602765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184b197d0be37fee02944dddefb6dd199cdf9de205d9b15c4f9e9997b19c45b8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPB601602770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b98d5ac001028e3e00ce924b9610854de5507b39c0897130b5cb56815491792. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/JPB601603435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffd01d6707722b07cb3cfad73962e5565d115202c899b937e773e1f539161c8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:09Z), 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/JPB601603526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a88349407316d00dbc5d53293d2b302cfbbb4cdd54513a2a23c0bff386b279. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:47Z), 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/JPB601603528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6d67909c407e753bb20e2e9b0fae845ec2ca5d1f79025ab0feaee0cfbcdd7f. 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/JPB601603529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0d26dbcf681dfee3a24bed253525130edb50b84c440bd4a3c7c478bda41e87. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/JPB601604030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055d6043fe919818e9d5efe7bb07a35edbe5d67e7ef01c55f452781104492c29. 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/JPB601703283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3563338687b7b6249574c0ae2d492174a47a89f6c1f1bc3e1fdfa986513956eb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPB601703277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83d3342c86c58a443ccd0f7668ae34d4cb08f06fa91c5a897b76eaa40de9568. 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/JPB601703278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed633abd07e6fe88ad1c5498e82cdfd170c89d9cf34d116c73109e3d3c77223. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPB601703279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f96052b992408920e62e74cecf9a2c648d92398301b197960d2aadd4e7e7102. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPB601703280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dee099474825efe65bb187d1ba7651a19643a071ff2855aeb07daf3ff8f238. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPB601601797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f499f1aadc6fde9ecc2512a8e7afd650c3a5d58e112b1fcdc2ac33407fc1251. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:27:01Z), 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/JPB601801115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9932f2adc19c89dc25d0a4fa7d792aaeb0d8a1d505d14648a9d2ddb7816733. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPB601900585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7143f37cebbb2d6efeba68062f61d8ba9995541080ca792e4c61cfac20e59429. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPB601902018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916099cb98c67779a0a30a4c771282dd48abff51da6b65a9a550493db2d100f2. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/JPB601402257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16452d0dcd0939abd49b292276b1ce79aa35b0cf4da627613abaa4e767670cc. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/JPB601900591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a3f1fde6dbc70289dd93dafb879c1fcf83296f52e6ed2c7bfa190c71249bf8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPB602000980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e86ee59fa619d5351f93f21aae76c0f8536ba7b56342c568248167d0bedfc3. 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/JPB602101830.
あの子のジンタ (ふたリマスタリング ver.)
ストロベリームーン (ふたリマスタリング ver.)
今日のさよなら (ふたリマスタリング ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1427db6ac723d8746fb2bd52ddc780324af32122d19844138c9df388d82bb242. 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/JP92N2280161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b1e6d6c0332742f33ba818db20a40ea8cb8e11ee3d1cae1c604930555d9ca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPS752300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0612c9be9f0bab3f2a5a65cc88101c08a767fe0b2b50853efc538e02ad7bb025. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPS752300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4affab07df60a6273624a5553cca1bd3ab615665a5ab173e7ab625aaa4a49e. 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/JPS752300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ead773d1cb9ca7009f445118df0f95698c9b7ee60d8a4d9de6e76c1aa503003. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/JP92N2414668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e6d0d47165f597019d87804f741eeddec24592ab3197c105157db7e15f2ed1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JP92N2439271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbc3ecca03445158758d1cfef209e07ecef9943249b8a028310618f9f660c24. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:22Z), 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/JP92N2542219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9a98b366966d7d00bed59c64dbc56277c3c3c841559735c73237b095a6f68f. 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/JP92N2542220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea64a7af69c8b78c2adda6807db572fa45782c9e88f983735b4a49e6f69d5bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92N2542221.