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 0x59461f47b81694e42f21ad1603975520158d0f98198f2ea690fdc30422e80e5c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06d8b2f9-fe19-424a-84da-9f4425953987.json and https://artists.proofprofile.net/proofs/artist/06d8b2f9-fe19-424a-84da-9f4425953987.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aether Dreams (Webtoon Original Soundtrack)
Have a Nice Death (Original Game Soundtrack)
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 0x34c0492d04cbe4979bd3abaa0f1c49dfe51ce1b80f7633799d76b61f94e4318f. 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/TCAGX2359690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a379f85ab00f8c95c708b96af3da9bd88324b761767ec2e1d6270135b154bc8. 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/TCAGX2359693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4845ea334c338e929eefb3a7d027eed859f55efbbc47f13e4c0c31879ce1ccb. 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/TCAGX2359696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629f81f8e6970af05009085ee8e843e7a0d50b53667887025f75a1becfcc8717. 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/TCAGX2359704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12128333ed8d78d4b8cc12f5f1ee4fb02a4fea2dac93f1f4f3abf0c2cdbd1157. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAGX2359707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76904884b4166898e570b2e56e8d7d4aba0144bf16583a9bc6919cf450eb5ce0. 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/TCAGX2359709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f8e6509bb0e7a0fb5f01fe151a16affc0913e286bf6dac0fef42ad4916849f. 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/TCAGX2359712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5290c4dc2d53a481a2f5987c48de78bc8c4c6e9af28845ed69765c1ce7cbb051. 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/TCAGX2359716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db85561b7354433cf31736c5737ac28e52738d856e8ba0a8b22eec36f5a30af. 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/TCAGX2359718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a681c5e500b883c4b5703d282653c709d28c9919dc1fcf71828c257622acc1. 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/TCAGX2359719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11764e305e551ce57726f878b1d0410a061018c1bb7d5a6ed587ff8cc61e8d. 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/TCAGX2359731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2798bd14e572a2fb1918f1e936d632d394c8fbfeb3d205b4fc67c9fef64050c. 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/TCAGX2359733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cca3e6e46027e742d6b99121b2345d56ae8e36ac4ca44ef7950414223e6a3a6. 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/TCAGX2359750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480017e45fa8cab5d15504459ee5132ecc2a36a5a5dcbed20e5f05a5b105fbc2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAGX2359761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78a95202e9980404d64197fa7d3538b0bb59e4c6ad3ef60ca99e253772bcf79. 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/TCAGX2359763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9f4e5dd6ab89f1cbb33f7e31716c66cb77c3e699f5f5c0587bedccade71cfd. 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/TCAGX2359768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f63a13db7d35eb1be803545603b202d80d11f827dcebe05800d02b95d07ab08. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAGX2359775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedd28590808473fe30d22f73c39389ad0d95b33f36f978a7a5c9bb2ea4f5c2f. 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/TCAGX2359778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ae9c5b9d748b3e236da94978560bc7681584829e11f4e0e2182465fe2f1240. 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/TCAGX2359785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396c7db38eea39713521c9be12b9985b3143cc8b94fefa7e7421515d769c1589. 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/TCAGX2359820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c2b1d9d8f0d0be4d3b38b5342c32c5ce4f83a3d42d028f7f8177adde58033e. 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/TCAGX2359822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbd61da891b9b50a3a4b4dced42eb07dd607d0b85ad424a1e8b09933a71d3c5. 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/TCAGX2359824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f8e74eb51c09af46df43aae66a51fb0f87c705169c9a4f379443ef21333ba. 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/TCAGX2366605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6737ba3a0ce632dbc9a843b0daadeb5ed9647dc3fecc81835aa6235ad39518c4. 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/TCAGX2366607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca1ca7fbefcbe9d9f474b1c5df5f4af6871670b83a806016954363f7daa16a7. 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/TCAGX2366660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49bdfe419024d22004ef2f29a3f36ccefdff87e210960497881b0e169a217bf. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCAGX2359725.
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 0xb017c11ad2ec1664e2eb3fc007a6228afabf1c8d9ae4e10efb6238df5f275516. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:53:39Z), 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/TCAGX2359728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc053cc7c62e1269c8c3922656e26a591b5a4c310455df5d90a2bee04d6db8355. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:50:19Z), 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/TCAGX2359773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f54fbffe29d8e9b74096509fd2fe8600a241f740ed581a285531060c904a075. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/TCAGX2359722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead5d73f61b0ffe7d8ef7e82954b8e6d7c0136f756ce049362ae7b94553ca71. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCAGX2359740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cedb72df6f3bfbd7c8b05e9ea633b6202e56fa66f954fbfc6139358f6e98a4. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/TCAGX2359781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270bd386a0f99a96831bc44608c8939c211f9c196085041e5d85a9e3e8533b96. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCAGX2366603.