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 0x851f3160f7f55434eafde254988019ed8301a4d92b58b615dac748d18c28c21d. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9e693d0-d583-4812-a809-f17fa9a6b342.json and https://artists.proofprofile.net/proofs/artist/b9e693d0-d583-4812-a809-f17fa9a6b342.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 0x3b002d9c07054c20599080d66069becbbdaf06b37b64497bf363c7089240284f. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:54Z), 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/BXT4P1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6744304184ed2bda52533516f975359819d0a1d2d3820ce13f64864a1d9692f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BXT4P1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8cd2c019ab7b07a2472d324a483667983a86dd1825845a3996ad6d224eb1c1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXT4P1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12667bf6da2a1e668b49335c75a6c26f5e420c90b33c3ea8517fb870a7a22919. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:23Z), 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/BXT4P1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32959f18d9baf0f4d1fc9c92f56a694bb10c7862177c43af30ad3f9621dbc897. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BXT4P1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d65d9a095f743b7db3f88373ad8c509bccf304b90651c3d24e2656d945fa93. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXT4P1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2255964b7a6a69c95e17cc66c6e289b496ad2478426917826ca44ed745d2952f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:25Z), 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/BXT4P1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3943e3ca1abb2ad7b06d14f11a2d5ad3c727b9894748659b49238516ba3ea3b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXT4P1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe812e3239eae3fd85ad1a2df14f466ddbf358fcf14e10706ff6354e92e18ba1f. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/BXT4P1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5534fc7fcdd4bb1984052702085cfdd9fc930e36b914116c480f1830a7182c5b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:47:21Z), 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/BCN092200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0addb34bd6394301762696c6da541874e73142948b5b71e58c46e8fbf7b6e42b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/BCN092200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68a3e95e5434c477cb685bdd066f9c98f2d1500eea89e2d07e22fb2c2d638eb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BCN092200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86bc3d82b702e8f0bc1506b27d889e301f2e71720a242b5d735bedd4c51346f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:15Z), 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/QZHZ42059346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951108c3dc4117f0a652701f98003a861c0ce23b1677f916123b30636f22fc90. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BXT4P2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242e0b8b3eb291901b038170fe1d89e6464bcf9036a9c7571ce7dd5bfc62864b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BXT4P2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39de5a1eae65a9069d0e4fc04eba0bb320c6b65cd7f91836a164d7e3765e4315. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:00Z), 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/BXT4P2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc898df45f3a2851315008b285629207260595af6c2d921eb951e4c501c086609. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/BXT4P2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784bf50e10dd5095bc8a82b6ac4a8836f6084035a105b1aed531fb8ec98b8e5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZ42059347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77bd6fb51684ec10650e9bc6190e0d3b9a573986bb6273cd181c7a78ce2c3ee. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BXT4P2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dc12b58b72d46961e41ff877244f6e57f74d3fc26c657cc43099f2ac168fdf. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZHZ42059348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f358d7a788c2e5ff293c2c70bfa3306bd013c5fe407192d0997ec0a36360d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:56Z), 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/BXT4P2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9380f62b5d1f58175776fccfcf5bc6d0d5f9b1e69b274ba353c5e18ec5745b03. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:02Z), 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/BXT4P2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403d289d64d5303b721b50e6d16d07a3ecca6bb3f95d6c658c8d1125348081ec. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BXT4P2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4ebf12e07355b82bfa613f477ea07ce0dd369f6c856a410637e31713f8b6e7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BXT4P2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4a5c7594ee4c0f0cba70998fc2988f36977bbe224260c1bcc4c115fbe91185. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BXT4P2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a7f7ffb2959acc7f7150fde7ea91455cec8fa39f0123ad37478f000dfb5abf. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/BXT4P2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8c63d1feb4586e0a8a9b74f6da19483e53b149d5e534a4e318a244058477d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXT4P2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1537cb47bbf9c0dd3928d11f2e7f273c75a6c417755d48e763f7c86f11bc8e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXT4P2500001.