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 0x1abf54474d3324b976ddc3e0532ab86f80e27ef51639dfe31ce99a24ec3210c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8ad1417-f1a4-4fa9-ac2c-5b5119448a58.json and https://artists.proofprofile.net/proofs/artist/a8ad1417-f1a4-4fa9-ac2c-5b5119448a58.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 0x33c26c5bf321a85bd2bda562da0bbcc6e3e4c07064ac6a75de1d266257e63700. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX761588845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434c596a7148bda79219198508c1ec41ef6c7ccb4a14198ccb9e04d37187b89f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FRX761588848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e1801dc74badc076079bfb4a510f9d636c0d1bca15698f30ce1212127e9eff. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX761588850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75035b49485048e4942ef864cea2bd1b7899d586c50e353ed92e64afc097bb40. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:02:01Z), 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/FR2X41462615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba1ed865acfe0a7a21950752cc112afde695f8701e9aea8fc10c22127b7087f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR2X41462619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d051d285a9ac37ab6a249d691070b3d7634997cad1d1c16d10f535b071b9229. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR2X41462633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4869efff0222f4f24f12907213773697be358edf6c76de793397a0ae3592a0ac. 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/FR2X41466851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bec3d052a9aa6b9cf5cfdfbf86f297eb9aa25a29e427cc66f334b63822a375. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:31Z), 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/FRX871529267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b0c79bde3d6575bc1f50b8f54f20159969318163aea6b48264a388dbc64a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X41549877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239220bf666ea6c6e72fa3127df356fb27568c467738aed976eecf6187cfb67a. 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/FR2X41657527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dc684595f17708668ab68f49a2786becb4e8ad2078ae9101750ca217768c74. 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/FR10S1671761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a68eb181e99f4e085f4369aa18dac2aa100c3fe701d5353829e5a37d4779a9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR96X1861055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7ed4f09ddbf532ae5b0998f3392a9a9594e712c077e42032311990d9502f88. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR59R1825279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b428798a2ae9e2373b911a3e0572b0c03a6beb52f664474b0000940fc2e595. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:05:35Z), 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/FR96X1854405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ce34a89132d4c6e09cb2a25c318dea25a71c2c47f2a1517a08466a9e139803. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR10S1911868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0671063b868429b28fce8ee2d16b3cc1743b5bdefdcbec370504bc94ad53dde. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282070438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7082b03bc3d412043cd92f28b7e61ccaa0711c2b258c674f218aae98ce234b83. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FRX282047157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5eefc4ea121999285c7d433ca17f649cb5fc9100e9a8ac0c4fdc7b92506450. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:18:33Z), 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/FR59R2128433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25430f550a31bb1eaf8828875e13a6bb9c8b1d788e12e0620f6d538dd253b211. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX872103569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a70b8272be851454ad0410355ce8f990fee4d14cd78410125a66668abf921. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS642218878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7513cb05fd26f9e5f744c4152307ca62b8813b8eb3c0cfbc381ceb51d6987a67. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:48Z), 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/QZS662205277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8cf609fbd0f4756d76d09cf1652385577de0065f2a4419fa26430684b17b29. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:46:58Z), 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/QZS662246588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4556910490b4cd2ceee6258e263ea092b3edc948d72987218d9d4f7ecc73c9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:01:31Z), 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/FRX762286494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf492ca84ee51a23e942f3bd0e125ec5165e305b367d2b0885e9a472c763a00b3. 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/QZS632202528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec090f10f7286168a342b60eece8c701166c9bdf0df40a1be548440a6a9ab217. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM42K2394886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf82941ea796209f7e0d9d9766286bc62004933d5d28edf8e8051c520b005e6. 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/QZMHN2387326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f03e30b81743b3b2ebd8c1d15ab68233680779e6cc196353a844db3aa4e0d1c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZS642277140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd150b2f691a6dc721bd43e4e2b56d9b956c585ae4de5ac8ac17d2cfac574c8c3. 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/QZS652256327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6612ac818f895a04e067d3da1f1a47b1b520ce5b272b242016b48137224acb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7M2465348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc935e323f0ed4ecc1a5707d3d9162229df40cf4bb988c31bbcfbf58f110c43b2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEUD42447978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06f9fe51cba758fb4d8228dc8baeeb2c3e6d1c04d52bb162c8e8e3e35f633b6. 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/DEUD42548874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444ea1b74a17882f06df0a05266284ec00a5a3120eb10d27bd04de222542a46a. 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/DEUD42548925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcc50203cc0a6125a01e41e40bc62ab65c8dab72b48cb0c28851dc31bf315f6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEUD42549419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9258e4a7af37d87ebd08be1ced10497c9c4cb3dd79201804e4ba68d328f21525. 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/DEUD42550006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbb13f61f9977fc47591e7ff13e1f05e366056b068bc71090f0bb0af14298af. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:01:24Z), 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/FR2X42560304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9fa5ee3f81eec983ea181f06641187527f54d0425c8ddaa4ea565ac4ef72c3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR59R2505389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f5ae1fa39c9c537f84e5943433401f24e90931af7c4032c96378aeaa550fe1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R2505392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ab23a3008ec09180bf418103a493ce774b328a4e5fda64f735f9caea24aa9a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:52:34Z), 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/FR59R2505395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe402a288b5e4f39145047c79b769ede63aa3e5de01907fe897fd5abb0e84e15. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R2505401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91715325c65aedccdd4c6e52f19dc3ec4a69bc40ec06d86d5ca6ab7cb055411c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEUD42561401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352d6411e61836beed8660fa6284710d4379b9996aae20c63c30635888d18c4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:14Z), 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/FRX452593638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5094048b7b8e6cd13a80e480a6f1eeb6a84e763f1a8c20b2eaaa052f441fce. 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/FRX452593639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7c4b27f09b5ca53999a9ea00a5cb1745f4d926769e8ba9d78b416f392af5ab. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:36Z), 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/FRX452593641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45634ad6d7ba6799cb8c9e191b1719991259202358101732242f818d00fbb552. 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/FRX452593642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe6d69053a51575c0afe0a879e9a4e3bfde9b91031f9eebaaca97b9e7093e8a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRX452593646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411577e4529a01a241cc6f3ba5bd9a401f3fcf341aeccc42a0ce1463ae72290b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX452597369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f859e9832072fca6d23f1ee61a1943ef95fc0466585d63d9692e2befe3704d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452597371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9bc958715a9fe28e9feaf1ff7cebb1ab8ac5934ca8a050c64e3d80ac55e246. 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/DETO41540239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df5af7e6a6d0118da49eb740a960a45b5d2301d0e6848b1abb2fd8b354ad0ea. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNFJ2303397.
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