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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa018005dacb6cfc8ddd127b97fc03c66afb6c683c103cf64902328aa8023fbef. 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/39519aa2-d3f7-4d7e-b39c-937ee5242595.json and https://artists.proofprofile.net/proofs/artist/39519aa2-d3f7-4d7e-b39c-937ee5242595.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f6d69cc92a2dced4fe53aa76178ac6132f4930824da65f37ea520db6c921c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM42K1991263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d7b3fe009e5cf2b0c080824bb8aa87eab030d981a9191b9f5407132bfd4119. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM42K1962983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfe0896a9f615d5ff345ae36a944ce11f14eed8bfd26e52f74851ad178cde5a. 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/QM42K2057224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf372fcd3b1f2de63cb38bc05cf8d525247e8a40b4d79aa1be35f8744a50c9256. 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/QM42K2072534.
条理加速の片隅、彼女と想像の中身に関する行方
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dce46afe74dfa6f15d54e8633a32791a9f09175f3d8b8a71653a23c22967f5. 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/QM42K2127229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34abd188288a99c65a19116d96749518eb01e28b3103ab9b90f85d334408f50. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZKDK2192525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6540ce6cc555f2ee50715b0c308a839f26675f533c72848d61b817f607bf3a1c. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPS2289621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9b1bcd71daff41074fefc7c449979e426c8770a8415f20e4fc6ae4ed0eaca1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCJPV2369387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306afd878c3b5f552f83e23c5512b22f0790e6004fcbe417273f42820ce824fa. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCJPY2326799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12188aacee106570093d3cb70a3fb98f651b899ed05278bbcff11240965e7b98. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/TCJPZ2459144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bb3d9e193faac10226d76f1174edc274c79b48f003f46a4c9149aeb04ed507. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCJPB2407979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7acdf7a09298c17c80fa5a3d5d8fee0eed86e56c2a39da04a5ea31e2064abd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPB2408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e8d27a8ae69c8d0890ed61cdae64764cb8a218dcdbc424eb6e0792d00225fa. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCJPB2408026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da57353e3bd488bbfe6d4a82768a7d368dd7ba6587f786f2ab29fa8b0fc61d0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCJPB2408036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d10aa34569c65481d99ba8a66e750172a241701db8dd628aa9e046438eee4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPB2408041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9b1bcd71daff41074fefc7c449979e426c8770a8415f20e4fc6ae4ed0eaca1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPV2369387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925855cbd2d1cad4b455c1e77892541d06eded39864d00ce68d0d3757cc38c03. 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/TCJPB2408032.
メイドサントウィッチリミキシーズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd570d78708b925b7c028a8ba36759ad1079eff3a5ba335d565de48149b97a0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCJPC2447153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12f4ce43505f2f3ee9e03a351984617b8970a4cd89818c2929c28c3031a79da. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCJPD2587918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092ef4abf3cafc0c6e369dec277c55c08632a5b086d1f4016089f96276ab95c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPF2591788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092ef4abf3cafc0c6e369dec277c55c08632a5b086d1f4016089f96276ab95c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPF2591788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9b1bcd71daff41074fefc7c449979e426c8770a8415f20e4fc6ae4ed0eaca1. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCJPV2369387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bb3d9e193faac10226d76f1174edc274c79b48f003f46a4c9149aeb04ed507. 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/TCJPB2407979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7acdf7a09298c17c80fa5a3d5d8fee0eed86e56c2a39da04a5ea31e2064abd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPB2408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629967307d110808c8bb92cd5a70e1b853b42eff13dff675426cfb0f1d37aff9. 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/TCJPB2408016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e8d27a8ae69c8d0890ed61cdae64764cb8a218dcdbc424eb6e0792d00225fa. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/TCJPB2408026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925855cbd2d1cad4b455c1e77892541d06eded39864d00ce68d0d3757cc38c03. 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/TCJPB2408032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da57353e3bd488bbfe6d4a82768a7d368dd7ba6587f786f2ab29fa8b0fc61d0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCJPB2408036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d10aa34569c65481d99ba8a66e750172a241701db8dd628aa9e046438eee4. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TCJPB2408041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f19a533ec541f97eb924377acb079fa44b907e08668bfad8328f5d3dfc973e. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCJPB2408043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab42408dbcf03da44ed0b19c2f5c77726745ed653dba9646d01786eeef1728b. 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/TCJPQ2106369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77072c9bf3635b22053ba0217121d801dc27877af3822a921f0c8f931d1477b. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/TCJPX2314147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9122c63df644599d00d6b3e595bd93695acaac62cce955e28b41f5293f38dbd2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCJPY2304087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4232be59f8768933d41d5a49c565ed24f089c71555bf13d92076646112314b9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPV2369360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e9bc64fc054137ef199f3d7e8e1b8f7a0918b1e052a82f80f95312b6ce114. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPS2277053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e68746263245dbc3d5e76c13dd2680a59d0489527a699d674af4c33035e344. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCJPV2391943.
ミューム、やっと会えたね。 (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2250c223ef26bb730216199f2611b05c4a4c079a78f62360ee54da18b2f3733. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/JPE562200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c2fc4a8eaaa297e9ff9246aabd78128c820fa838121a46550a6de4b79a9df7. 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/TCJPB2405746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7311e7c1b46dfe86c6cb800755509ee1ed88d33dcb5031c1e0c2bfb38f29949a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPR502501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23deb47200b02fe59c609a466b438ed3010580442a276dbbf05f3c41b419c3a. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPR502501011.