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 0x200a9e97bbbf8118ef9a4db26276164281ec9ff6ead2d39c286e28d9145d65e0. 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/bd89f516-312b-4d2d-9131-834309d4aad6.json and https://artists.proofprofile.net/proofs/artist/bd89f516-312b-4d2d-9131-834309d4aad6.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 0x2c1ef6c0b004b4f7e8664462036c31d9d137bb8b0f7e1fd28d11584bceeb0c95. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA72547775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5517a3d069647ffe47d7e81232d672ac4670eab4f0baed773615c57f6983faa. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZDA72590954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5517a3d069647ffe47d7e81232d672ac4670eab4f0baed773615c57f6983faa. 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/QZDA72590954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a69551bf770629d395e878a018a41788197eb2652ce45db6f45e3e477ba1b1. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA82599665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca614d5d33470de6a3db0ffde82afd0b4ecc85c74edb739e79611ab21fd34928. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA82599672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb683284d6e7194de0d022e49793ca7e448e92d11b174390beae5a1fc0b940bfc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZES62586822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e470940dc93c85a73d07c8655b1624cb38c084bde191281a7d8b85132ceac1. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHN32583571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf501d330cd1111f42e90fe6c7bab456550698af0d1e05b58ee8a2770beba227. 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/QZHN32583565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b57efd94746428449e6c9b2e0ba61d57749a6f7590e3cff9d30ff623e9272ac. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZHN32583566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87170c0b440f67910e8e2a4820b5e535992c49c359d59d2ae54f1272231acc02. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZHN32583567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98e37ccfebd5aea390947a4fee9061b424b376b0b821f9064da66dbdb4fdac4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN32583569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ec9431ad8686b26b91b20bcc5418610c9f4ef18be180abe070dbc2eaf46e6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6Q2506398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfab5efc6f5b0356023c4eb211235622ae8fcc6090599bcc921dd8095f01a15. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:20:12Z), 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/QZK6Q2506396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078b06c39f5ad5305227c0bdc586de219f6ba06761b3769c535c260387c969b1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:23:40Z), 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/QZK6Q2506397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ec9431ad8686b26b91b20bcc5418610c9f4ef18be180abe070dbc2eaf46e6. 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/QZK6Q2506398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b3a0fee4dcef48f5e037bbfd936850ba52df7d118e86be3a5bab7c9130b2a5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:35Z), 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/QZK6Q2506399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f15340340db5baab6ca35bba8d2cbf9f3fff6dc9284581c1c4e234c68e73e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6M2556085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4675b21ecef12a0a8d17cf396ec9d4f28ddf36755a16711abb7ff56a4ee484b8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6J2551563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dcab3ad9570c34bb9e20727d5045b42c5fa4c405b943731c5a07a4bbdcf165. 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/QZNWV2515859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb0146ffa5d8835a73103754bf239326320f4e4e71b448fd6e836983c910dca. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:48Z), 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/QZNWV2515860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a1fa42b2d9036f9c5c7e3e309b77e65e274e55040a67ee266705d2eff5c4a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:10:43Z), 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/QZNWV2515858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb0146ffa5d8835a73103754bf239326320f4e4e71b448fd6e836983c910dca. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNWV2515860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c1f6b3a7dc500549ed8d9fa0b4b346d384d9d20eed69950bfdea49aacdc455. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWW2583354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5134a305df60b18f95ce824096fe8a1d5e2c5c2a72602927b192e9b4ba035c3d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWY2548252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bb0a9368c387b100369014b52603b737660647cb0885ed4827f1ee5e66c9c0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:48:39Z), 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/SE6XX2546491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb046c85385aab8b21dc164fd20cab44aac1e41a708165eef343a35acd3f4ded. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:25Z), 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/SE6XX2578288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b91f6469b3c9f34ab2e18799dbb1904af2639354e48ff0ebd49dd34be81779. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:39Z), 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/SE6XX2578289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776b110f13756373234638bee40e3e8a838a7910834d80236ef3138dee0e97ec. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:50Z), 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/CA5KR2539287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f1cc30512e1d4e9c5b21b68a3b722dfeaf3cb0c7f4d52574a5e57d817fdb2. 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/CA5KR2539289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3dc45f5d67045667ee6e2f14ff425d544ba571fe3682b2eb85d0e96b137e52. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/CA5KR2539290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd03565863805225b7f4c708ba22849b980ea3863ff642e0f8fc4192d190abb. 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/SE6XW2518116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb4d239fa5ed22ffd08c42dbf91de3e3984577262544deddb2faeec5e3f9b7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:02:56Z), 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/SE6XW2518117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ab7243b3fa7122fe02b32839b9299ac3cab1c21a05dc8fab18fb536f98017. 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/SE6XW2518118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07776ddef26bb329012981fc07f97a48a9a1ff4aa490533a31ccb7e160d389d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBKQU2568554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c85c4e054377242d8a42264d1197f79974f7037172960e1ab5dccb11090a336. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:18:53Z), 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/SE6I32546824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c35ee6940c8c664f21382a15b9373b565986dfcd6beee739a25253ee63de8. 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/SE6I32546825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388948a653beca9af8cf0ae0ab32a63edf07b1bc20dae2edca11f526a3302954. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:31Z), 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/SE6I32546826.