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 0xdc861f51b707ab120e586118efec0db4eb77415b965524230a357b86ad197675. 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/e2a3b960-d0bd-4ab4-8698-55ab5b252a22.json and https://artists.proofprofile.net/proofs/artist/e2a3b960-d0bd-4ab4-8698-55ab5b252a22.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 0x8c931593af88ce6311586961287414ff3b8b093c7ee6b5fdcbaa3a0f91b3a79d. 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/JPP871900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e797f86702640d853b2e0600db264f8522c8f192ee2283c6c027fa13b95415e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPP871900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7b47d534a1208d06deb1f5087c725f13159c21bb0834a67499bc32dab6ab24. 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/JPP871900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfa4b67dd9a278871eb323e1ccbcc659608a9811e586636bdf965012dc21208. 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/JPP871700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c931593af88ce6311586961287414ff3b8b093c7ee6b5fdcbaa3a0f91b3a79d. 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/JPP871900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16998b71a2d8aa6e66354fb8705d8cafc06a6693b47c94b2d138e97bb6b85e49. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPP871700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1f949f9b4ebed6e5614ee61650e18f5ccfadeaeeedf9322888809670d535f6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:08:39Z), 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/JPP871900008.
TVアニメ「可愛いだけじゃない式守さん」オープニングテーマ「ハニージェットコースター」
可愛いだけじゃない！～式守さんキャラクターインスパイアソング～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2863ae0949c89abe42b24e6e35acea8e55a3541563bb5b032ebb53f9c39d6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:35Z), 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/JPPI02201150.
星屑レクイエム(TVアニメ｢死神坊ちゃんと黒メイド｣(第2期)エンディングテーマ)
バグちゃん(TVアニメ｢聖者無双～サラリーマン､異世界で生き残るために歩む道～オープニングテーマ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aac31403b6081f7244d4008361da3654c0fe07a071ad2bb479560b0dad7810. 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/JPPI01350593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc733facda5689c9d32cb707c09e89393e5f783ed9177cacd2a975261bb07ad36. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:11:12Z), 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/JPPI02302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aac31403b6081f7244d4008361da3654c0fe07a071ad2bb479560b0dad7810. 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/JPPI01350593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50d05cc7c2c8938b2d4d5f44c80636741d7c044e1fa074c374e571883a99b1e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:48Z), 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/TCJPX2308177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435410f60b3e693cb5c1c37f31529bd249baf0fdf01e944dd1502efab8eeeade. 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/JPPI02400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435410f60b3e693cb5c1c37f31529bd249baf0fdf01e944dd1502efab8eeeade. 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/JPPI02400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435410f60b3e693cb5c1c37f31529bd249baf0fdf01e944dd1502efab8eeeade. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:04Z), 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/JPPI02400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc733facda5689c9d32cb707c09e89393e5f783ed9177cacd2a975261bb07ad36. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPPI02302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8bdf46c17bf53bbcb6c86fa181cfa42ab1d3657d53cea7089852344e3983f5. 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/JPPI02403250.
なすお☆｢メリーゴーランドタイム｣/ASOBI同盟｢王様だーれだっ｣
Nasuo[Merry-go-round time]/ASOBI DOUMEI[Crown Game]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41ea5ca53a9dc72ca122d73f014acbddea2cf9bdbc89bc35a16cbe4cebf381. 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/JPPI02403240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc4db98e42379747f607458d9671a2bce68400502f59a51389f53c5a16cd43c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPPI02403251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4f01849e1bd7788ba028900647e1178bc8cfe08ecff1aeff1dbdbb6fc0bede. 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/JPPI02403241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a648120d1c4b71312b3ee176ca0e8b30bfdb055370c28f6753be0f85b9cc91. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:39:14Z), 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/JPPI02403252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbd667def2950650c4b286b974dec0e336351f7dbb5b1a049fb842e96271ae0. 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/TCJPQ2294717.