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 0xfb8faff633592cc1d8aca8efafa826e4c6321593b20425fa5a56ecd2a35c10fa. 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/36da8932-99a6-4186-87c6-d194e684330d.json and https://artists.proofprofile.net/proofs/artist/36da8932-99a6-4186-87c6-d194e684330d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
シティボーイズ・オン・ザ・ラン
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 0x420bba0db180329d0d6655ef1f49757ef683335b2d9c546439e9d7d387496813. 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/JPG101900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85735f9ce83b9e78daa7b25a72b7b387ee2ee145f66297dbad1eac1b6991009. 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/JPG101900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf834eeedd70d76287783cf53aed55e0fa2d02d8dff6adda3ac1ab2c0cc10e7d6. 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/JPG101900223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9702cd74c49a21f2398d3b8b51d01a4151cdd43813b1a07dddc598a3a53079. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPG101900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20965703e854b77781a3422f620aa132b651b33ccb885a35b33852cf05656353. 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/JPG101900582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286bfd7b571e9bce68b0f1f70c847da576667dbfd5c783a809b7e6202c909b03. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/JPG102000316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51036146171088c5cf0e546375f57b0d71dd0c62e26b146d737c18f3c123517. 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/JPP302000629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfa3b7246aaefb17c97a296caf3afbc2e5096d56a90aca2f91ae25ddf56c8cd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPP302000632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258945075b669abfea8b22d9eaa6febe696ec4c30593600e452278837dba4aa6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:17Z), 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/JPP302000633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615ead24d541d937bb101b0233c0bc8bdc51d9e35dd890b716220eb8c7372bb3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPP302000634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d3e89f1f894e66f076616e6a95585bcbd7b681a4dc8ed71bbec4e6d54a297f. 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/JPP302000637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637088ffba4171ccdbb3c1daf70e0dd92700eda2c84040c00637b6c0818a99b0. 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/JPP302000638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed22a99ef319a5e71d18c161036525dff4861978baf67c937f4863b8a4140b08. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPP302000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb73a6fe0d96e670ea9c8ead8a26cd28de20fe361198fd12ff74067003be360e. 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/JPU902104092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eade651cd07e296727c23131be079dffe098651e77f13187fe72cb52b97921. 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/JPU902200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b57fae12f9c50697b251a09ef33b1fc8f324653e53a4fdba94a59f683c2d2db. 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/JPU902201385.
心拍数とラヴレター、それと優しさ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc91e4651c5ec6991549457fe723ec18b71c4297d35e3e43e4ad0e8e957f5cd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:25Z), 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/JPU902201387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb73a6fe0d96e670ea9c8ead8a26cd28de20fe361198fd12ff74067003be360e. 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/JPU902104092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76127a1e23fa6cb0c82ce667a0f73987deb8c451e278ae54ec7636d529878c28. 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/JPU902201388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dada002430d6e77fa188d17f4f1b81ed66e7b68276e8cd8125a04a2817e49d8. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:28Z), 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/JPU902201389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1842777cfd2596145a1230ad56a02dc4d53abaaa4ed5f5d5c1c024a8084ba8. 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/JPU902201390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6966fa817c7bec274c536e1c97cbb8d01e0267287c11771eab7cdba1aa3c68cc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPU902105388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4608b96a6cfc14daaf0b29f09c4bad5e94ffc1b10174511db2fc10f3914dea8. 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/JPU902300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b949ca6322f073ecb993fb95ed40487a4d18a53dc2147f4fee67f1e71df1d55. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPU902300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77c0adaacce720c29f04be4e8fab650167f5d8ae3f952f166be773c91b8ddb5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPU902301948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d95932eaeb2481f0dfe7fcbbb0b242bee5f04e79d9d86d7c908b608dc092f8e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPU902301949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8402968efdfda969f9cb91f430a1f95e7d0fe66efb991862874fbb6884a4462c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPU902301946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a2c0069419bd632ac5a42c2135461d390308a7f3bd59367899ae3b525aaa67. 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/JPU902303175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae95107ddbc95f6ae4336a291a9f92076c673990f53f85bddee85f03bd584eb. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPU902304410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de5b568622859218bf07e37a974d45893f23de72b9f8bf5044f90dee8b80b85. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902305439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91945bd49a7eae38fbde52c11439109ed138b553e8bf8071e33a5ad1e7da5d73. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPU902401550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a2c0069419bd632ac5a42c2135461d390308a7f3bd59367899ae3b525aaa67. 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/JPU902303175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de5b568622859218bf07e37a974d45893f23de72b9f8bf5044f90dee8b80b85. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPU902305439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2701cb5647dcbada4b35d30a397865d630d5b70047a2a09757a666d1853f8d. 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/JPU902401642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a06e2aa505fa854e178e9dfaafb21c50c34961293ded129811eef52219173. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:00Z), 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/JPU902401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4608b96a6cfc14daaf0b29f09c4bad5e94ffc1b10174511db2fc10f3914dea8. 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/JPU902300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd6a4ec2b85cbd157bf2fc6fd9126634f504736f62614f0f8ae78f174596022. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:01:54Z), 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/JPU902401476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07257157171335a588cb80217f6c30fe4f767f0ba7f13a4c82620c5fadf6d0e. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/JPU902402075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880e34bc94fa05b5a289609f955aa18fef2f0852864c67f0ee6e730622376891. 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/JPU902403817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31061c7252351699a16b31ef02bff2894be7c92fc2e4b083e3b4ee3f40730a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU902500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd5e04335062433ccf37418cb47c79a8cae39c96c305b9d0b23be917b1277c8. 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/JPU902500396.