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 0x92034e2500d19955ef4b8ad35734d5a4be1fb146e9251cc80596062a2c857a98. 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/6ba2e5a6-dbf8-471e-abec-7029147567b6.json and https://artists.proofprofile.net/proofs/artist/6ba2e5a6-dbf8-471e-abec-7029147567b6.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 0xa514f2ec3f970dbf63d8ffdae5c723643159978bda46262e0610cc0af6599fa1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPVP01105502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e33db63a966717955d0f070ab35e925796392db39d102a5b898c8ab48cf7db. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPVP01107104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a44cb4fae09d123dbd33cb6d028da1dc8fed03faf66c624eabac4e8bebc37ad. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPVP01107101.
僕らパンクロックで生きていくんだ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e7ae6726a6e0776d25b094fdb0a69dd525497a980fc534297d2e683b503bc3. 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/JPVP01322102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0031076d425f45309c445730677852d3b13b488089896acea5bec4dd10e11f9d. 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/JPVP01211102.
そんなに大きな声で泣いてなんだか僕も悲しいじゃないか
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b75905f6e255c45dd0134b229aad524f62a7501620c8d4107663565a539a82b. 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/JPVP01322105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa8f122eff7c74253173eb8d472b5b2b43e26b76f273397a91f4d3d578e3a48. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPVP01322106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae0f478f43a2f64c666c8ff1885b76c34966f66522494c18a79b4d9b251536d. 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/JPVP01508001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acba715cc703dc1d46b195822813f9833e0f0dee2b5d1debb2582aed9480e3f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPVP01508003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65568e046cb5ee0629820f5e55dafdd8c8fadcf215aaf7b5b78a37654705f49e. 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/JPVP01508005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0199b933b6d2c8c13b1641d7b96acdd44e12d32220aa5b368ba71e258ec361. 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/JPVP01421101.
忘れらんねえよのこれまでと、これから。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabd9b1f2b936abf31680592f8ed06dae5d8d6e1bdd360df0eb951a1beb01737. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/JPVP01514701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685e8fe72d90321d1bafbe3a9b957d22d779bd84de87842161f96ab12fd2d6e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPVP01514702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f38cdce118c5249bd032adf14833f31970c3588d90c429f8c546c82ec0d9ac. 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/JPVP01514703.
Wasureranneyo no Kore made to, Kore kara.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdca1fb36524b922b5ad0007065e8e7d61f9957b87afb09200611bf1d8b231c. 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/JPVP01607003.
いいひとどまり / スマートなんかなりたくない
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7de44fcb80ba2dd61e039bb701c9a9f391dfc6aa4bed750cc2aa441398516d. 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/JPPO01704715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533dd5a5feec46e2c6594fb52ed2787fcb83fc9bbfae67614ec94784c81b707. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPPO01704724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8784f11e106aede95ed93e0eeb3e023e5d4a08b4bf181636167c0e5d3207a51b. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/JPPO01800708.
あいつロングシュート決めてあの娘が歓声をあげてそのとき俺は家にいた
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92b312d33d2d925b7f295a80be463914aafd05194a0bc19f2597fafd8c7a462. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/JPPO01806493.
君は乾杯のとき俺とだけグラスを合わせなかった
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202ce7757da750830f87aba46a5a3aec458b1160f5c8de4f6ad353b64c374f5b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/JPPO01806495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f146e578b8562ddc2a1aaa22e0e28213ff5f0b8fcfed1d8b993defc514937b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPPO01904837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f781a1a4f532a21664b92ae799effeac8d74c113b02fa3e83dbe5349792fd03. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPPO01904838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ae89923c8f3362d8259ba3ae05c4c29c5aa844ad82fce38bef1d3cb09472ab. 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/JPPO01806492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f0bfc94be33fdf10599b860ded82cb00150612040f1cffd164f915de5616e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPPO01904841.
これだから最近の若者は最高なんだ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59db004753f5f729b66de2b93b03318a4d33878d14baa10f0bc290387942f2c8. 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/JPPO02103765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8757d4ac996459603cefde679dd1137c61fba965a1836b8a5e92b35bb33e9b74. 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/JPPO02203267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d35c8d380d730f7ecb4e42c84546945a4092635ec7825ae31ef8f697eb4f73. 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/JPPO02301225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c57c9da31b78f1e04b7deca0741520c24233213f539167706c7619ce6af5fe. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPPO02301845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c1242a8c68e56cbead97445f52c1b0262bc16dbf60217d38c8a90596ddb133. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPPO02102324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22381d21e091546cca3e84569db8031364e8d0a6444f11642a7fa6a8bbf191dc. 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/JPPO02301424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26726d286c84fdf8271796d6e161ea776df76c1af747be5c368f73101e4f99. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPPO02302739.
そっか、自由か。with ちさと＆まひろ（from ベイビーわるきゅーれ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8d516b40215e9ec726f81c754a49d9fa3f2bd51a547234da1bc6a2b27f6668. 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/JPPO02304178.