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 0xe5774c691d750a405ae279605c2f22754c4a637a1007ec0bff395fa08296e8b0. 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/6981fb6b-be7c-4f81-ba48-46d6e06fae55.json and https://artists.proofprofile.net/proofs/artist/6981fb6b-be7c-4f81-ba48-46d6e06fae55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xb37cb5d3af42232cacd8e0ea03fbecc8afdddfe3a59b8641076deca18a7e3ec4. 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/INO132102150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e7d305f35599574942c93d89d0fa1a0f436948f812d5cf56cb09c2f25a5be0. 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/INO132102152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b21edf54f1cb4b5cc4d3b3610cec3c43e5a5e705a1c5ffc1ea9041e4ca997. 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/INO132102154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff34b3e8f4c39986e201e968c4954ecaba15b4534459a59a803f8a10aa1bb0aa. 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/INO131605840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75669409dc3d51047295dd39be073b5620792b1feee8025fe9bb37834261e636. 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/INO131605841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0726dc13f314f79068a266eaf04080d7370f25d56fcec173a69edb0539490966. 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/INO131605842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa95f104318ae94879c73e0364208200d6b14f0fafdd91ebf239bee12c14132. 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/INO131605843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c1e150db19360476f89d4e7bcc556056ea724aa1e7c25a076e30e4718adbe. 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/INO131605844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edda9209e28cd8f6b57871f75325959cf9ed254de07101419ce237c3569f0a6. 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/INO131605845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f589b6de2ee6ab28bb47bb858fce32ecec7b75fdbf4cb41989552e8aaf44a8. 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/INO131605846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aaf2f86960b5c436c7ba1fa2e78f5603da5ed942b93408b4a600cd34723857. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INO131605847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fee5f8c25c64e34e65b009a51ac8890058bb4a5213a29789b79660224b0017e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/INO131605848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f562f543024cc25ffda5151164c921cfd169e4e347cfad378b73587b0ef482. 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/INO131605849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323d960890ec4d6e42c3a43b122d09a0b0aaa407bd2615641339e3045d511ad4. 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/INO131605850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a828a4431053c65910d3c11faecbbadb4ba7f563de5cfe504d9e487bb61065. 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/INO131605851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7640efb033aad4f0097df7af15ce9e0a9c406f25b3b7a87d61286e63e68ee0e4. 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/INO131605852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cde10c0fd4c553f756b70929278b30ee44af750cf89e1bf5842e32e3eea099. 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/INO131605853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5354b694f367ac5aaefe52b7bb522026798d7b12e5385c092adc369f1822533. 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/INO131605854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280e99dbdb9acca6fc6a9100009db60dcb28a06a2d06fd3e83948eba3058774. 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/INO131605855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e68dc7d155d3e186815a3d607f58ee1d91d3048a1512f4da9651b904c38ae8. 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/INO131605856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0bac7fb501b2ccef0b5987818fb58bf961c60b5aa9c3dc39879be8fb2ae113. 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/INO131605857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26756737bc2fae6de6e3b81f17413091da9c3091ba3db5415b6c5df499bdbca2. 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/INO131605858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6985343f2430f142568188a0225fab055183114513a42ad9a16223ae88a58230. 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/INO131605859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d9ffbfedc3d2af9fe0ad059b13c14907df721f280b33e3fe5d20e05670565f. 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/ING642305523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37cb5d3af42232cacd8e0ea03fbecc8afdddfe3a59b8641076deca18a7e3ec4. 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/INO132102150.