The Clarks are an American rock band from the Pittsburgh region, originating at Indiana University of Pennsylvania. Over the course of thirty-plus years, they have produced eleven studio albums, two l
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 0x2f733365320107d0575f01ea52fc8057484981db78f5c457f68445747a9a4b2f. 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/7f4573c0-4b2e-4bf1-9489-7ec0c3dbdd64.json and https://artists.proofprofile.net/proofs/artist/7f4573c0-4b2e-4bf1-9489-7ec0c3dbdd64.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 0xc95fabb76087dd0f3ad8874fd9123e4dc2b1abb1effa6dbd42dc22c2688ff2d9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMC19651751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64825078cb19d95c6e3b89c47e8c2ed83aa52a4bbb73b1f5f3969abb085ab9b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USMC19651752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab2b723cee5ca51a1291fe45be4309e44b21b8cfa891bc75c1217b32c4a8652. 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/USRZR0085802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cef5ba30bec0623bf1f21058616df652f65044117224700c6744775490d5fb. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USRZR0085805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b9a23bfb3631f78edc99f793a400022428faf137318df86260c7c245de097. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USRZR0085806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef4abed37dc290326a138c6560f6801ea0c94eff31a3867544e37dcb2207db8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USRZR0187602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b3d7a415abd0f4a14e792d943f48de516cb8075c73bd28216c8361dcb9ab9. 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/USRZR0288401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba754a7ecefe441c62d8765637a50abf8836a30bf25cb7b2d6ce6205a4d08d52. 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/USRZR0288406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9350de361dc6ac6df889fcd3fef8e3f3aaacb9be0a11bdeb205b03cfe6bded. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USRZR0288409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c0a17f19287f81e1c76a477f8c831b654b60208d34fc8ecfe290a75d37964a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USRZR0491801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0b0c0054feb59e12c08ab9c1c3b8440fa1d25059ff2af33206004f7c27392b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:21:50Z), 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/USRZR0491804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7c48d31a4ada51cf8304ed5ab16b8c214aaa9c9f10eaad7a141ae1461d91a1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:28Z), 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/USRZR0491807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8edd4384faaad989c0bcc40c8c96e8af149601e6c72079b19d3ccb734593b4. 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/USRZR0491809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66efa8b727cb28abeef66b581726d5f8593c4b6b92cd02fe084c20816933601d. 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/USRZR0491812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51232ad0397f39f0a148fa318f12f2ca320562c0d872fb446b2fbebbf89c4d5. 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/USTCZ0943210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f468370d00eb2c7b053b61070d1942b1cd0e817c852328cd16fe32e0b9d330. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:18:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTCZ0943289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775c1907507f3d0dd50f7532a4749f298df97854ae81e6c5120aa9b24ee7ed1. 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/USTCZ0943327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201fc879886f520317cbdb93cff878cedfcce0e46b4e25cd6cbdcc736860656. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USTCZ0943345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac71d3a8bae6811844d182e39b4d73565d3df22a1fc90bb82bea8622386ee899. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTCZ0944441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86f22c9c1876c29b5a9cf063a1c3765368d44ff30d7b85cdc1f71b8058a7358. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USTCZ0944462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735310d012f5eae4b70b155339f3a0fad94ba9caf9dd620e1ad395b1fdf79c3f. 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/USTCZ0944482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7242deeeaeaf40549bb6c5bbf3755eb6be5f52598855e4a4674296fa72fbfbfe. 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/USTCZ0944542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa668e427601186806ca811bbf771ecf66709362f3724ca302d81507ceeda1a9e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:25:51Z), 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/USTCZ0944645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097ec7b52dfea6f311f7359cbf859fc39b5dc9b74ed56acf4ed7920dddb40f1f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USTCZ0944690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40573b9962b7697bd573dc833515f06447da5cb03e784c22c6685e39b365e5db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:03Z), 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/USTCZ0943248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c908655bc2d5a1d96a4baa576277ed5eb99784cc1adf23ccf97249fc8d04792. 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/USTCZ0943249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2360c4f7a9a952cbcd2fadcfe2b5636f68bcc52c57909fc96f69542d580949. 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/USTCZ0943250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459d92223e62988ce7e19bd40acda3912005c24b163b362f6186432b1e66c17f. 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/USTCZ0943253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf83b1be0d00f126523928a18f7df58c335c83f9629fedf8fcb6628e46a4bb6e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCABX1456153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d42f51b0822721fd8eaa8afd3d99b7cfba0e7d4900e16146be1d3dae26fbde. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCABX1456170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3a364bd7e1cdc6800bf3e1d499ae66ed69ee783aa12c5710babd08c70ffcc8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCABX1456183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2044dbe99707742937e80b7d451b03f5719754ef424cc38ca4c062997e1a1bf5. 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/TCABX1456186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795264880386146ded789f1aa96b3443d84d97f101ad7ab951110aa52e1201ae. 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/TCACG1507257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4050e52627607d2d6602c9384f00d9a6c06a8c80b99158f5c6f62073dfce67f1. 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/QM4CN1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda48c54b3c6cbb77ccc8c7d0002a55ec96a2054f49edb68da8801fcb60527c0f. 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/QM4CN1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d619ed05fe187bb6ca28d10e59349cbb4b2d9c0b36666354c020e59eeb252b. 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/QM4CN1800010.
(What’s So Funny ‘Bout) Peace, Love And Understanding
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1fd3733390adaef1c37f674257235b982f225a1ee3722cc3a75b1ece534314. 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/TCAGC2202551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b482781c4dc2e90161945a17af99665afbaae8f2f0d1ee4869a556dec1ec59e. 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/TCAGD2277276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc94173908e65cc81146407ede51ae34b03884e533f54d0d7f118947bef93bb. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCAGG2220857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374fb3d645350d4477fdba730e216fad0d1a271934366207b24e5f04177cbdc0. 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/TCAIG2415016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb830e618c395f2264910dbfc018bb8e75214cd270ed3c9d46362c2701632ae. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:37Z), 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/TCAIR2473351.