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 0x522b177803f8491dc3530adeb536f7e369037de1f66614f3ccde7f5d3c578aa4. 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/c20e6f35-dfdb-4c60-8869-27dd6bef460b.json and https://artists.proofprofile.net/proofs/artist/c20e6f35-dfdb-4c60-8869-27dd6bef460b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
阿波連さんははかれない オリジナルサウンドトラック
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 0x9803328c205d77faed6905d6663a7c00040167ca92cabacd74677e22d4670b20. 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/FRX282234661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77efb62c4d0c52c7e530f3974bdc0f5b0a67532963e316046e9049fddfac9ef6. 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/FRX282234662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb149bfe8960ee621489411e2ddd8815c9450a04e396a71d8c7b182d6ee5d7a. 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/FRX282234663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324a6d8f2568a30b633d1c423714630b1bfc8c6d3c32d72b267108b9f6a515dc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282234671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362a1a7ca3b82829c6283eed92aa640d825af408575a766e487f6d2727d60e3a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282234691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade8cb85930b768527b691cd9a5d3715e7f60b86d163bd740175c44540f5b722. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282234695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6882010e7e4511d8ddb1e84ad5425205d73b957ae0130c77695a3579714d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282234699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcac4fafe43ac05319a393e0321ca7f3fa6ae620e50c95ee6a395a2d94a5e9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282234704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdbe96134f16632b465fce34ab46f79aa19efb9d009e516831fc2c18f6fae4b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282234706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e805aa8ceda7b427bb8085c39b83fdcfd8d5aa88bbd957353be9d584976e8e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRX282234664.
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 0x4c8dddb55a48ca029f9017bfffd99cbe0f415af5f7c43a8d4d71c13cfda9ce08. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRX282234665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81342a8d28a3696f4e2f6d1c880358a15f2076c7ef8bad48e228f67c43d054e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRX282234666.
Vivy -Fluorite Eye's Song- Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61603b5f879d20dec98f63cde3cc93c23ec105b4994f8fac3df3acbca8abd10f. 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/JPE302100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03de360365154d3f31f4651a69d68cc69f19440ea986c9be66e4f9f13f781411. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPE302100738.
涼宮ハルヒの完奏〜コンプリートサウンドトラック〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f61913915ad3c1e2e43692f487e73ca7b344909cd487daf775c2d86d24a9b1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI100602673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f880e8cb15c631116c1f7259252a853f10d651731206abf9c038be52ed1103d. 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/JPE302100733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e41d24a32d9f22dfa0d09f5d029101c2aca4fe7e47337720941ab4febf7922. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPE302100724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1b247846fe5b820a4cb810394a912760c8290ca8e6d90982685e720fd4f7c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPE302100723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5646d581ed6d47fd633237eb4bf70a43ad9dc9c97e7425df1c9420996139de5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPE302100732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9b4fae87b2b5f9696172b2da11b918e52be2c544acbaf2f38b784936c4c8cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI100601445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd031b0916c18c9f94f125bba3d5aac81faa6eb6107657a305353246d88ed6d. 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/JPI100601277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16600606bd73dd67a7d0e1973b48ae0b1d84f64daae3ca45d917aadda2ddeacd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI100601673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653d8b7d61a05c7eaf5709acab5fa6b863326ce63ff45a96435a63ab49ebb27c. 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/JPI100903443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8072ef8af0b048ac290bb11ee2094137ce55dd30545fa475cbb14cc0b83f5265. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI100602064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c53e1c9a14ac5be1cc0d02a68303f1b154e0da70c47357955519dac583424b2. 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/JPE302100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89253c36cbc6fda2fb4737d059d2a58440f918a60dfa7cc840d582248018ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI100601281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852068eec9ceee9bd7670c8bd2434e71956dd60dfff5c3ebe01532193d311082. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI100601449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51efa6a78d9cedb0087bb3a77da7a8474f11904b1c9b203a16c2a50795cc2aeb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI100601865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254b9ff6a46d6ea23dbaffc935261e52eddd8c6ff652459aa2b2e4466f10e08d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPI100601864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c1decd0cc158b9d7d0b51168563730aeedf4b43ba667201c16f6ad0ca0e2fe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPI100601448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd537b0ef45eba96958c7adfa8413d9cd6a3ed290b72e81373734719482dbcd46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE302100721.