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 0xa6ba611e05e458e2a99a528b0c418bb1bf67891be4b00f848ae408eeaa56dc90. 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/88c2c4a7-57ee-4fba-bfad-465a04e1fe63.json and https://artists.proofprofile.net/proofs/artist/88c2c4a7-57ee-4fba-bfad-465a04e1fe63.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 0x04738ad3f38be3a4fc9ebbb61210752232c8c50197b11bca9ff5e200a392125f. 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/JPCO01825090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1be11162f5b44b08d42df9b9cd2c5ebc2ea2058b6892a4f866a408781950ab4. 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/JPCO01825120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe600556a1d0176c37a2648cfb1e92d1b6a4a02c229b6c1fc4471574f32722e9b. 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/JPCO01825140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5598c57ac1e3e07f35361a6aa1613dc4e3cb49066b7d929136c8a231cd21b3a6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:00:24Z), 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/JPCO01825170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42aad529a3a90a28e6b8affbe119e9f8a04cfb7356b251c1410b56fff260a1f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:33Z), 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/JPCO01825070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20ef0e0a955666b00283255d935014e85eccb358a9cc168f9dd1181843e7169. 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/JPCO01915260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316d7542087eca26daad8b1bcc151d149224162a02c359c628ba7b103f3f615f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPCO01915280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe8e6e69ee4f3141761afd4f46e11a24db74f157b6bd5ec7e8b18afed85e49b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPU901903030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ec9e2d4039aeb84504b68e90b9558136b99c23bab0e05fcfe5060799be6671. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/JPU901903033.
渋谷ハチ公口前もふもふ動物大行進
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec434ee9198006b1a408e7aff190f34a376a7bf472096beefaa4bbf225a50e24. 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/JPU901903034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a3fe0f7c7b8ce25b3fbd7110ee0bf1a7bd17a8e24535edda79a6f44a9aa799. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:23:21Z), 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/JPU901903035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a3893dc275493c9cf6733d2b29e89ee687e6b86c5c9b863439e9fe96786cfb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPU902100710.
俺にとっちゃあ全部がクソに思えるよ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956e876c8853aacd1c46a93995de481a44f45a62069f8830eb622f5b174609b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPU902100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9183ab92e812e93744a6074eeede032eeecf43fa2f0ca15c231ed6e18bd44bb5. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:24:20Z), 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/JPU902100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef0b9ea467631fee8198ca557753d3f9e689795da09700ff96d3b642081bd8. 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/JPU902100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677bba64b2f8b9fec5348af8581737dc4186b524013a4a9e26a6e1d8a4d29ee3. 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/JPU902100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e8afae0208d0d52af8da1901eb05e7c1a2bf20a37d47ee5aab5e666aaae2f. 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/JPU902100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127e93d42adfe0dd8747b3b0663fd5e7df9f43c9e33971892280b4203936377. 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/JPU902100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c41b817c1b9e375ddc46e986bd84951033d5fc9e819919f162d28489073c47. 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/JPU902100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9563e845364d84fdf19499b02451fd9c807ac281e347c573d5350addd1e76f10. 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/JPU902100712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3ab7ae44d06d4a7633a8cb8a0e37cb073644caf172973b09913c724aedc55. 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/JPU902101693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3853c8bfd8532383d8e4bcd0bef5727aea469e12c46f01fbd9467862bf8731. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/JPU902102222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea06cf013f9457841df8d1ef660d15cf6cec2ad22238cd1dee5ac1c9d2727c5a. 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/JPU902201420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bcca5d6b9763f3d47b55bc7f80ce8ac75550b64cd3c9f38968e928b198dab6. 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/JPU902201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda067b14e34b7e18464323faa7a0eb6c5de092caee04ef4be1f232f7a09e6c1. 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/JPU902201426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c55751ab366e59df4ad43075aebe8647ba62319db214f82f3cf0beff1101cd. 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/JPU902201427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d060307fa3b364b75431cefebcab080dbe08188e7d8fab5068acf3dc44f57f. 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/JPU902202745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375d49a7cded09f905743f7a1dbc929afe5716e78cf9361c90e784957807c3f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:23Z), 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/JPU902302344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c2d20343a508c1c0a59feb9cecce33b48982eb965db99db0565c9b9ec766ab. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:36:41Z), 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/JPU902302345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51ac243aa6c2cefb33d10583010a94fbc6ed0cf6e2a121bc3728d4a880d4bf2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:17Z), 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/JPU902302346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f046d7dea1385462796108d7aef0fbba6c4187d37cbdbcbd986e872fa55d9. 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/JPU902302347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14443a531a646f54d403c475cf7a1ea38eb6a92f80bbd7da682a8f8a1269165. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPU902304888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4c1ef4f2f70c7fee4fad1203de6c557972787826d1bbb39774b817896e2516. 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/JPU902305463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9994cc1def4af1fc7e985997a767d63f8f17caa076420df95e80a6724a509f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPU902305486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066bae38efd1ca5a56bb51978b972c0ec17845d4a481cac658e22eb3d03b01f2. 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/JPU902305467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c7c1ee64e3c6df724ecde8d9db64ef8c4a553eabc6fe90575273001cc5f810. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:37Z), 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/JPU902305468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99609754f0685a6c95e4059c52bfa8910fc20838c83665dd3c20d4186822c957. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:43Z), 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/JPU902305469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375d49a7cded09f905743f7a1dbc929afe5716e78cf9361c90e784957807c3f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:18Z), 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/JPU902302344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56235430aa0bb0cf91ef072978f64fe4427a42ea3bfd082828519488b183db4a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPU902305471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870b3f410fefddc86828f9f546599b8ef937fa58150c0bea340f36451c19768. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:16Z), 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/JPCO02502360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dbb84bb202b83c83c0bd6fe8af1015bd021a85337ad31e1fbdaa8cee809b05. 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/JPCO02426010.