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 0xc5d9384d298dc90ab7688bdf9dbc4c1212e8610f3c81c03f90c59fba59dd19a4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdbd8179-6171-4162-afe2-a7879d507caa.json and https://artists.proofprofile.net/proofs/artist/fdbd8179-6171-4162-afe2-a7879d507caa.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 0x460bf0a20e26c6b7af9cafdb7de00cd1f54be9f5c82548f519aa61c96c7bef7f. 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/DELJ82096417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd031b0cd6a901a75fd1e7f9aa640e5b0ef826a14dbe60d6071827e44ec90926d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DELJ82076144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0006edfa3e926a27c10845f3f4924793ac6c12aafb560adc2bf4ee2d4e07af06. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEKF22001365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb987a66fd0c833d5eed40ea199c0c5441cee028b6336cceeffa3c0a04ab4fbf6. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DEKF22001381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb2e43f41cdee0a926ddb91fa09082a57a384ab9a9f425e22e43fcbed291e88. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:41:19Z), 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/DEKF22001374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf84c4de1cee5ddaf0d413585af498ce9aa455d59951e5105b36b5213aaef26. 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/DEKF22100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfc18c72ccda4de78c0f6fa844acb408664bac0135f8c29311a010774173589. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEKF22001373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d8cda7924e16c12d52895f01e7dd5f569b1cc497039335699ac13053a9fdde. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEKF22000712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b946637ddafb5e6e5b1f46f6e91bdb6e8f45b2bab7660ff54244b99c336e8c9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEKF22001380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb987a66fd0c833d5eed40ea199c0c5441cee028b6336cceeffa3c0a04ab4fbf6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:52:17Z), 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/DEKF22001381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d472c685ce4f56345809afc8a3f79d93fb2e7ef847ab404ab3086ad8dce1d55. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/DEKF22001382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6e9025168571065982fe3009d918ea7d73c882bbf9898dd2110c7cf852e65b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22100674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd536cd0e6c2c4ef0470418e77d7f98ad099805358a2103081aa88abaaeebdd6. 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/DEKF22200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daf0d56f7eff75688e6646a7707e247789dd51f24016f4dd639105435396efe. 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/DEKF22200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360f06b351e0e44f465dbaff2f57e4d76b36477eb69672838f50257930498fca. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEKF22200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6e9025168571065982fe3009d918ea7d73c882bbf9898dd2110c7cf852e65b. 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/DEKF22100674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab395dce8cf13cfd9386e190b9c969c6f5f532c4738f2e976b763c08a1d6b4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEKF22200426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daf0d56f7eff75688e6646a7707e247789dd51f24016f4dd639105435396efe. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEKF22200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae0712794a5d51d4a014cdc6edca26a506b3f1c57d356b5c83cffe00e5198f9. 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/DEKF22200423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87b63c1c470f67c58a97a2c78870b58222d7d80eeb7413efadc785d1d5f2bf6. 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/DEKF22200424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7574885e3550498b48acf2955d3f810eea4239987aa91ee337d12a4b84c20ae. 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/DEKF22200425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab395dce8cf13cfd9386e190b9c969c6f5f532c4738f2e976b763c08a1d6b4. 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/DEKF22200426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55f99005a29a7bc04948eee7d86fb7bcfb13fc0053c34d8f6aaeb208abf66e5. 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/DEKF22200428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba03c9c7c1294160a49d29084f02bc0a715c6950d6a4c0f747974cb5be8002b8. 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/DEKF22200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f52b2bea5fa5b1e0c59ea853f3716ed1aee8841468739b30c496e7382b32e. 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/DEKF22200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d00e37234cd159fdd6176d72a7a41723ea57e2f57d92157b0c2052b5a6d2b60. 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/DEKF22200431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd536cd0e6c2c4ef0470418e77d7f98ad099805358a2103081aa88abaaeebdd6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:46:42Z), 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/DEKF22200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6e9025168571065982fe3009d918ea7d73c882bbf9898dd2110c7cf852e65b. 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/DEKF22100674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac266f48ba02d99e17ec6f8d29e52961f5a66e6b6a13bc1de59e9d2b2704c1a. 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/DEKF22200433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a6234b0a520a0f78e47870f1d505dfc6f9a1c7176ff939493e4ac450976842. 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/DEKF22300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78f66d60627dff735290ab2fe1e8ac8c333c94b79371ec5611ed668d333c45e. 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/DEKF22300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1b6343339be9c02ab4fb879fd2b981a77f0aa92095286d0b9b496bf6170df9. 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/DEKF22200724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa2542e103677940ad59ba9ff241324704240148b151fc6fad7032d10e317ad. 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/DEKF22201048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0012b3b2617e829a7b31bca5d349c68b2bc1571b156d8ad7591531929481d326. 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/DEKF22300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b21756fea652bc635699b2183cd3c94ace1cec2380bf3f1f964e98bf9047a3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEKF22200545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd8bcf33e04af3d6a207da8d2a0da2a07dd56bec739517e82d93554e1e2c450. 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/DEKF22300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd09195122ee37d10aecf26444c4ddc86e8a462bfbf63f634d6604d79cbbc5. 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/CH7812410743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea73157d879a1291ea134c0fc76a536d7985c6d0d418309370aa19bee1d2e26. 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/DECE72106284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea73157d879a1291ea134c0fc76a536d7985c6d0d418309370aa19bee1d2e26. 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/DECE72106284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dbe78e77690b173a123b8cf0be0fe95909e7ce44bc07fe1657fe70ef8ecc47. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282471160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2102eec546ca92e58c381e3ce41209140ef32a56d94fc3d4db31c038c119420. 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/DEA622101342.