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 0xbb9694a2227be62081504a9048d26c0f74393a7d845b2f1971cefc27678a82f9. 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/40b3dc2d-00f6-4fe5-9762-5a58cb4fe3b9.json and https://artists.proofprofile.net/proofs/artist/40b3dc2d-00f6-4fe5-9762-5a58cb4fe3b9.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 0x9386d90ff659ecac2b49351d2fe6feafd379649e6327b5b383e06ed57cc5d20e. 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/JP92Q2200553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a8b01b315402435fdc13ccf7ed2a2784f7d7df3fb7574c41aedc83e55ce462. 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/JP92Q2200746.
イナくなっちゃえ大作戦 (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54909dd2ebd42df1bd692146f92f46a45c9c7dbe9e65c240be15125baad6617c. 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/JP92Q2200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472c20bb9be0fa4a125bd55c9a20f3712ba4e04010fd5eda202087c758181d81. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/JP92Q2200841.
【悲報】ミクさん、ストーカーしてしまう。。。
【悲報】ミクさん、ストーカーしてしまう。。。 (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a4c7ea8971301d8540ddb26c6fa7160efc8fc902385ad59ad810ee2d16a654. 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/JP92Q2301225.
汚れっちまった、哀しみに…（笑） (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93397d7ab1973cc2596b8d8a8915e9a07fda07a20295c880ace9162590470b6f. 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/JP92Q2301350.
明るいお部屋で君ガルル (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6343f88b1edc26ae4240abd8aa358347caa6432d00e1c24c6f4f93a1559757d4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JP92Q2301613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6609e03ef5603a6a6902c01704389a3e211b0655b096bd891e5a21f15f27699c. 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/JP92Q2301838.
アイアンメイデン・ジャンク (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe084f0f4ffa56bb01423025fb207c38955b7db2acfa26ba9be9de899e6059ed. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JP92Q2301974.
【好きな人】昏睡させてみた (feat. 歌愛ユキ&メグッポイド)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2fdba6111eb5aae879b7a688c558473470af791ad1d20d4abc9685ec00a574. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JP92Q2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f4b6ba0c6090fc2193633da50bee6089c2d4d757fcbd67c047b20eabfd882. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JP92Q2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f41a9d69a982d451bfc8b7f41557da43a92d77b68133b6ab39e0062609f9d4. 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/JP92Q2400432.
【好きな人】昏睡させてみた (feat. 初音ミク&歌愛ユキ&GUMI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea83ef152a3ef392479b7d98747457e55e8a04e6bd7c853ca44df870e198cc1. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JP92Q2400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6112f77eca336395ba38c119a8f6ea5b708548b8f37d7d2117ace7779904282. 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/JP92Q2400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6cbbbd3a60136d8d4051f237067e05280890f1f3465caf39092bf2c2231aa1. 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/JP92Q2401415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e0ef4377c672eade12cec365e2e4bd5fb82583e0e26813d5c17541f48dfb2e. 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/JP92Q2401418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37fc51414cd867bf273b0345bec055115b674b31ddfd46280033120d191b2e9. 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/JP92Q2401419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba141273100a5a178c03bce33d575cb45da52a6ca33c87ba9ff571607ec7ad. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92Q2401420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1210fd1b27b8a9acd79763dfe229e8dc0302720e63122f8647651f02da929cc5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:10Z), 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/JP92Q2401421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd4a9850da8544357c8c736ae1081a375ee65947f7dbd919193bf4c81882422. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:25:59Z), 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/JP92Q2401422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61732d3cbb18943924004ce777bf1961ffcafb6dd74f84228298504834ad94b0. 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/JP92Q2401423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39a82c739a11b509add5d8e8273b54dd19f90f2b96d408066e7c3aa12726fe3. 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/JP92Q2401425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9557b27047364eb33fafb81f253be525d2fac830fcdafb2630bd9e7a5d5061e4. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:52Z), 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/JP92Q2401428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e80194de76765183375228afe2bcd87a5a6f96c33523864f9aa7039478aaf5. 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/JP92Q2401429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723ebdeba9e38bc3a2ea641304fc1235b67362a90285fda1e26d506f20c8bb4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JP92Q2401430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fec840bc8c0a0d518bcc91b99af1bc7b90c991067690dab0d2814f17b804aa. 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/JP92Q2401432.
キスと抱っコ、リストカット (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bff9efdec045a8e7e9b5ae9900290c35d60328d08a1714eec9ea27a817b2f5. 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/JP92Q2401434.