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 0x033b7b2250fdf236297dfbd0b0c42f1ad647c39281650b4cb78c4fb9f1473c9c. 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/f2210ff8-3ca4-48dd-8c98-ea844876d475.json and https://artists.proofprofile.net/proofs/artist/f2210ff8-3ca4-48dd-8c98-ea844876d475.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 0x7f5f9be6144a53f832b2e69ba9c72672603790c8e7c660bfadd42bd8e314595e. 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/QZHNA2335880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd187c269c0aee8f393fe3d10819fd9e25650c31b162f6c8ee134ff280ca594bf. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHNA2335887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bf2548c436bf78da541f3d14b0d4b19cdd91f94cec6ffd8fb3b7c5106d2dcb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHNC2384599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8baa1103bd98033ea4823120b402add86a8d27341c2eae2a2c4af711bf6f56. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:04:43Z), 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/QZHNC2384600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d34263f17b410b99708bf6325cf83d3ec61fe080e56dfa542ad0dd47ff045c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHNC2384601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0069d85c9d7864965e1169c5f97d060c255a21bb09a3a29b9d42e4825df67f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:56:38Z), 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/QZHNC2384608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f85fee5de4aa6de4b462cff81dca1a833ff9beab0f8556dd3a087fe665787f. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/QZK6P2387720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1c8a8539adbec4a47df1383f6242c2ad3acebf2d312f542e4d4164aee78697. 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/QZK6P2387723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaff9876c39d0af2357583a44e4fee05e9fb1adebd99c660b92c8d38db3f1ed. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:51Z), 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/QZK6P2387724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb40cb4d094054ef4dfa4c25d5bea68a1b1b568ab28fa0c70b325918e95a2c47. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6P2387730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861ec0ff917fd032f60fe8b3f3222f347349265cb217e24e883ccf5a8291694d. 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/QZK6P2387745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a8558181d54cfebc7d22233c318587d48f0fbf37bde6d740aa5dca50fcedac. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZK6K2376206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c72a3e71d225a1dd110765ffa075a09b29bed93587ef722052fb2a5ba8d40ce. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:28:14Z), 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/QZK6K2376207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7886e810529a08965fb9b5c3598bc4a4d47547396f6a15e7372e5c406558b46c. 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/QZK6K2376209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2a6d7cb767fd5b9aaf0aca69170596fb6f734d0006ef4550c32798a2aca393. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:00:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2376211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ed94a78171cddcb981893a741b647313aa553bb1b2ab92b3032fe3bd0ac61a. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZK6K2376216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7243b40b76c058b5b8149e2c6d03ac7dff924a1b6740dc2e7cf4875f8c44fd. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2376221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e436ad8777da47df70c1a963446e1ef44b9930273d5c4048696c948abc6b63. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:38:59Z), 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/QZK6F2300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba653037c91b6be4b26457535dc66a1527a8b9c1f76b6895b9cbe47c0190d2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:57Z), 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/QZK6F2300519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678cda382e9b40c99b38e508e34714b5f02d4eaac25e3626c42e6585cded8075. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:36Z), 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/QZK6F2300522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84f04ff27193fdf8533db267c65aa887b6ce193d099145d55966036948b9635. 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/QZMEP2392211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cee5d719386e6cde9357a3bc6b5893db4e4ec45b85451cf401f862d2421b7c3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:47Z), 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/QZNWU2327278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceded3f56a2e84619a8398eb6e400eb674bee04d4fd821461580ef9a4b307b59. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:28Z), 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/QZNWU2327281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf6357605aaebb096f495857844772fde650c7e401e63070f72bd57b9bce608. 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/QZNWU2327282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b15f75e6451d8d8fcd2d964cb23988db9741724185bee2077d40344ecb1634f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNWU2327285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3397acf3578952e912f8c771b0aa72e8725bf9f96daa6bb5ff59cb051820d0. 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/QZNWU2327286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92923c0613f514e66831e066c9f0be1efcda6057712a99338380a37560d2a53c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNWU2327290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f240369b5cef7aac35b43ec775ef49e8bedd43bf95d665dbd78c598a0c12fe9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNWU2327292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd446a2c9f9922b8eb41d425020d6f8e888f3f383271897173588b4f23ddecc3b. 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/QZNWU2327297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4de53bf07631fbf95494caa2b738fbce3cfbba78161d9552d69da7b1573c7f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZPLS2393131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b07412eb3ebc3a894896dd3c061f28321804fc428ea82b3083a481442d1c65. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:39Z), 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/QZPLS2393132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960eb0b321a53e7e104165bbfb692059e450dd0411a6b85173427027180d74e3. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZFZ22432098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700463b8486b07e412bd6379aa7c7b92ce962b20b53a027fd39f2cefafda8e18. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ22432100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b25f83f62c3322eda17e5c7998869e05a27374e1b78f6c8c8a3b78bc8dbb52. 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/QZFZ22432106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841671e8ed92407b014e982bd2ee19175ce33454b94eb8ef2a7042fd2d1d3ad0. 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/QZFZ22432108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfca17630a3921309c06105e848970d69e726aa1da169a33b467dc79839a71aa. 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/QZFZ22432110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a45563294661d0bc24cdf6ab83634b798c1af8203c31b1b46d4af9e6c9149e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZES72432604.