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 0x079561e8a8441f62be83f31148be74cf2471a28836249d11e897c63c80618c8e. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03de19d4-9ca0-489c-b810-f640189c3563.json and https://artists.proofprofile.net/proofs/artist/03de19d4-9ca0-489c-b810-f640189c3563.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 0x2d35ccbb742baeb5e5fa810f445dda1926f1106c9557e07aecf510977d0589f6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22351747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0fcdbd6481f000437304770ab951b9f10fb2096005679c8d869e1d0ebf026a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/UKXN22351748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb04c5ad221d740c6bd34ef488f28158e3fc35e8269ec99eaa24e726eebf478. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/UKXN22351744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ac0f3bf2a8367cf82432c226c40648e469ff7395a365ce3de6bd0461d3ffdf. 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/UKXN22351743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3c4e255a249e566884f09105a677d86ec52d0668d1911728d3be41e6bbe6a1. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UKXN22351749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9925167a8c60a1b2da8cfe483e698b3f172f2f29a6e13d8086715a415aca7e5a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/UKXN22351741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa505ff30dcc34864c82eb8ed88dc59679df5df5e25af1384b222c831b708a437. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22351750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627fe0c8f2e67ac23f8fae91f0c23a34a51223e90b22671731a344e2379bc42e. 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/UKXN22351742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb3391df52e95b24c0bc47c495e086418258f4f2382b6efec32ab34bcd910f1. 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/UKXN22351746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd3cb3cb87a24171f9e3e58e0b0ea26b9bfd7b4f96de4fe4d83568b2ac7d87. 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/GX5MX2473683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d8ae6b963b5036655fbe3990682fd81bd40a5356506f5e9f3d6108b91c16b. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZK6N2507574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3acaa7feb893ae94e88ebbf1e9bc344cb0fd3f1cd0e1125e97edf84abb7ef41. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZK6N2507576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00105ccad2647447b5d93ad66bd618c16ae0dc81de6ffc4134c5cb758b63db45. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZK6N2507578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa966ca48cf718e8a14e03be0fcf2d55f6dd78a7955baef83415b2625f313443e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6N2507579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9fa4e262fa7b4ef3cbe303607b8efa1a3e438863381cb53053dc7c37ed9c0c. 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/QZK6N2507580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98988766d5d94aecf09fce2326b7def5a51f3a18d43f800ee1101a34eca84f56. 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/QZK6N2507581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320014c6247c785fe90b22bc9f4d526174272dd77950ee6090e6e8b71ed3e283. 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/QZK6N2584928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eca1b673508910e7e0cea976c0ab472f3b4f29cfc9847a58857ae9968dc0fb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6N2584929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d366aec3b08307f1964acc60988f42f09a37ff4459a4743aff842a309069ced. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6N2584930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb50856076b9e6c08f59a322812cb6cbaca01653d8379a840a54e9b29a9a851d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZK6N2584931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98a62a3c5bd218c5d5ad337c8c5123ce09d389c482b14b8d4aebf7811208948. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6M2506578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eb3cd22fac578b790be37328cbef6de6a8fa7bfc078115b25cf40ed9133d4f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6M2506579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef26f22b2221d0be75beec4ced0a3ea234d69045ef66891631e3a521423cea. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6M2506580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5953a95b3a9712a81e300e4d4c35d385ea3118916ac7008eda101d19a618958. 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/QZK6M2506581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae531c4da4e36bcbcb4064e005e65919bdbb2c1ae44bfce71bd03e45ef22970. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6M2506583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ceba508fa5c931dbe2eff24281f1311a5ebe5db38abc48e693825ad8989fa7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZK6M2506584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665874b131cf5af8c758855f3818c52cd812b3d928e7cfc2f9b97e98760b5ffc. 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/QZK6M2506585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394dc1707d31afdef4e7d7dd748a6c1dbccbaa5273ce7e60afc47fc7aee235bd. 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/QZK6M2506586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676461e77c328d5d06b0533e166f32b189abff04e766f690e1bb6082331d950c. 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/QZK6M2506587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae94bef7884809b71ca15e99fd33526d18a7e91228016321c58a2c1ca8fcf17f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZK6N2526888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a1a360a72a35f8bfa13cbadc08d0f858490666f2c2bc22a93c151458df495. 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/QZK6N2526889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaa3a212ecdd4b77a83bca4cd63265bec0a7bd0f0a427effe6c6b96e0b21861. 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/QZK6N2526890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bc405887e50be6089efc5710466de9f9b3c78990aed81499f16a5dd1ce214. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZK6N2526891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14296084516c270bdd598c9cc678f30ff5fdff06be15cfc8ccce20ec5f4a30d5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZK6N2526892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16633c346e6c141d42ad367a50a8be71ddb5fb28da05f28ba0efed3d88d1788d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZK6N2526893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd70b3f536b798de8898f5661786120b5636fb946f299823df20ba1f9f31a02. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZK6N2526894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6615ae28a232d0d096475cb9af02a1f115d3f5de5ab0f0ae7bf44940573b199. 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/QZK6N2526896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882378754f4cd0c9282fe447b7869fe917cf72092310b5a66ec22411e3272f02. 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/QZK6N2526897.