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 0x91a353453a01f079c18250c5ca0844e1b31e019463761f0296b8a687c4290bcb. 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/7c658b06-63ab-48a0-997f-ae4c900bcfeb.json and https://artists.proofprofile.net/proofs/artist/7c658b06-63ab-48a0-997f-ae4c900bcfeb.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 0x7a33d1958487a877716ea58767766907cf984bb0127f7ad8783748c31b4e5218. 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/QZDPF1819213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c44233709806711bb6fa94d06695f3d7e052784fde5f75cdf482b752184db25. 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/QZDPF1820442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67203867c76df62cce670472c6bb6c504228ac1a7c3d3bc3036bf1000ee0081. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZDFP1811959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fb3a2c8db7c385bd9106ea2105119c62b4edad09138cc410d66cdb44169fbb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDFP1811960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c44233709806711bb6fa94d06695f3d7e052784fde5f75cdf482b752184db25. 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/QZDPF1820442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682f7ea138a75e813b083d82c55d9e049d0527d5ed7f0a4275c97dcad43b0026. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:48Z), 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/QZDFP1811962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126f33a5d5d8e637841df75898ea5856042463fdad491e7a27681c171a0d44a0. 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/QZDFP1811963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc574eb074420a6cec7a6ad82d4d582ca911fb7216a2df73eec6cef4806759. 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/QZDFP1811966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f18f1d4ccf8e74f5de2f7d2928768298c38d0ff6b0481168967b280f536f37b. 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/QZDFP1811967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc5cfb23bae3d5cc1698442b3a0f2f3caf87d8a5e1511030e25415fafed12ec. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZDFP1811971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5a0a14c10209ed63378f3f74fbbec6a47834a2ffffdaa659cef17e23f6bcb1. 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/QZDFP1811978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072370eb8b0b94b0ec432dc95adebd91a04c707567f068b13670613664bfead8. 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/QZDFP1811979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1954a6066f31da8a626113b4f818f3db588d39f7eec563375bbc642bca9fbbc2. 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/QZDFP1901589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b37a22bcf35ac4123165e2b3b539045dce43d1965e95b27e0f6a82efdf2f7b. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZDFP1901590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498b11c881b0439ecb49b940b05f4b17a6974e87d6bc773266cdbfadc5beeb33. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:01:57Z), 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/QZDFP1901592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a79f9483e96b7c64c91dcf745ccb19d70b70f73986c7b4d5940b586f6b322. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZDFP1901593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88a69071237978ca71a92e97817fafca0c59038fb0874433a326999ea96cc47. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:26Z), 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/QZDFP1901594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7b640d87d6f3f8ae3254dbfdb18a4aec9fc8782b5663a4f1952411345ad30b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDFP1901595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959079957406007e6a417e2eff818e9d23414c8852374e9a1b3fe77482605cac. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:34Z), 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/QZDFP1901596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ff0cb353d6439db6cffaeee80705ab0d6c18de04d893f9b699d425c923d929. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZDFP1901597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6e6265155db9e5e4f7e0507c52744dfd85511a3a0523e8fcae402f9c5d3dcc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDFP1901598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508dbdca61031cd176b0838a1478881593fb4ed188aa175aee3c4bcb166c4bd5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDFP1901599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d34c6af0012f1b3a462bb72dc721f2ec91112297283174c34e7e421ac04cf. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZDFP1901600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac8309be3d970e5c5b998e8127b066c576b29888d7ed08baca4d6e2f52630e7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:33:38Z), 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/QZDFP1901601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf843d324c8c6efb58c9a1d16551f199c96fd5ad38a6a087c0b0bc25d0840674a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:28Z), 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/QZDFP1901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab0b3a598a0b498b5cdb806c7e89766ba093efaeb6104d7ce4bd1271d6beea2. 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/QZDFP1901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebb1219af017cbc5d5377968d8a52c1729bd2a46129ae2342da3fc2d5471129. 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/QZDFP1901605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ed2e7b0938790cc9464d1e696e94fe009f5b525eca44af5c8290027f5cd6e. 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/QZDFP1901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d5f75d6795ed87002731caf9b916fc1b75a6b8181ba50e3fddd3b3c788790. 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/QZDFP1901610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd36e93ac84aeed64052675b943fcfffa387fd88eb319971a882693f25e4456. 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/QZDFP1901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82e0da60e1ca860bada31cb8b83e0f55c05d332156165649f669cb15c09679b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDFP1901612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371478c701313b408807ab41da78f7a8ed0e8669ef5eb72aca739dfa7282d14c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZDFP1912703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebea63b8ea6594183b6e2ab7dcf1badf1525146450f8ecd47cdd176d3ad8fda. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDFP1915530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e070d0b676b1893cc881d8e869f4ff9251561efdd8a36ba5d922ad5a252cd88. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:44:25Z), 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/QZDFP1915532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd483055de677f892fe29e3f87e8bb5508fcf8541643ce5d128e94dae25106507. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZDFP1915535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00595bacccf72653bd95e428067f7ce399a5e57704db405e632195db214ff6e4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDFP1915538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc6ac95880a8a87e274f416102bb7378ac468408ac36e40d394402c851fa403. 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/QZDFP1915539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d41b8b89b5931f7c8eba9e4e6ac4eed23b3696846a9efb04901ee3e128496. 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/QZDFP1938228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cae949be56f2911e0dda49903c304479343f14e2edceb668ca1555b7630f77. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDFP1963216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065655911b07d2f5df3bd00400ccb67185fd38b1d593b2f1a4283c76e5fc2c02. 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/QZDFP1963218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387601c1d686e140dfbb318a88f83b61494cf5af821166a8dce792a2b6add364. 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/QZDFP1963222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2703e34334746d0526fd4a88bd911ada048509b3468b15c3ed1d366bb0d1a4. 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/QZDFP1963223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300e5dbdb69d2784df1043b5b0abf319bdfa2f317791f23f93d09bc32fbaea1. 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/QZDFP1963226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fcb42f3f401a441e413d888fc346c5799a015a331feab5ca64bfa7e6cf30b6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDFP1963227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bbaf0bdcea03301d2143cc0a873e60ea4f082f47a58b71b0d4742a75461f49. 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/QZDFP1963228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67beadc45a8de65c7c56fbd9a439064c56342eaacb279be2bfbf7eb67155330d. 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/QZDFP2022024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929e9ea04a3819aa6aa56a7fcb18524aecfb0bd33d4ee325d203233658846e7e. 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/QZDFP2031820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e67313708b8ab1854a8190da883050cceddca291ca26216da9ffccf7ee6e91. 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/QZDFP2033133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7538908a597c8e11df58e3a3f9e77afcb169a74bcb4d896ad8f777f6cc60028. 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/QZDFP2059435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d62d9e93563c8aa849371483362697696ef6f2a02ae609e97626d186598de. 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/QZDFP2059437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6aacd2589e31a0941e8d6db492e667cf76cb0d74ad2dfd6930f1bb504fa85c. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:19Z), 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/QZDFP2059438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ff8a8bb283f05b8423f25eef52ed562b97a1b0ba75cac00d8d5defe8d4c3c7. 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/QZDFP2059439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb98f5076f3f3e101e5fa6e910745758a96101a6e675b0a10e42c73b9b0c7e3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDFP2059440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eb74c3212cfa40b824a7f43bc160ccb5160fe774656d62a68e66bf3117c4e8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDFP2059442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778c32abb464dc88b2f6b2c13852693b23f2e031a8faaf18090bed6a0e0dc235. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:15Z), 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/QZDFP2059443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce4bf12f7028908321dc945368fad7a33be6893a385da4c7bd68e8ca58dbc6a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:21Z), 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/QZDFP2059444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1330e488f2952f9e7e9b10997a86480ccf773db2c0799544af91f970ff4dac. 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/QZDFP2059446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5613b3439b6c6060046ab654ab0cde093e718aa0be9fc5e7d7fd569fb44ffd66. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:34Z), 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/QZDFP2059447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c98ae63be186975a827627fee3588cf2051f4f9f1c3c6043308b96eb557eb7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDFP2080285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cefcb63b47bc6bb9ce18c5f5c465cad9a7cc4a47643ed4dbe63845635ef7ad1. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZW9M2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81219c491bb86a1118ab459f0d3618b6ef8cbb06a481ccc7af65750b95a1ec86. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:04Z), 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/US7VG2402035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42878548fd6e1e4620e27820f114b5a10250549b7b5127a75b6820934101ee92. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZMZ92442499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f5164e373c091c859105af924d95dd722858e1beafeb4382c87f7127146eb0. 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/UKU932400665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1987ac9606124637e58a192728a28b7bfdb2b7d6ef8db6e1b62318bdce739fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKU932300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4f6f491b4992d9e089039517683b049eeae7fceab98abf363bbc3836081687. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMZ92196525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d409ae057d1fefd22fc36b6945acf84f293d095788cea24646bd17f19a9813. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHZ42134700.
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