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 0x0de3237180c3695e8e0a4a8cef5b834000492ceb3ef2b600529f570bcda18d42. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5418e9b-4b46-4375-8104-19f15f66ae15.json and https://artists.proofprofile.net/proofs/artist/a5418e9b-4b46-4375-8104-19f15f66ae15.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 0xa805c1fe3c7a34a266f1de4c65fa56c51dcf924570880229f1bc571375d79ffe. 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/QZNB82416298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de71ad938a2542c7ac183f8a8a0771c16c2cbc49ff3af9e17c3ccc78eb9a4f. 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/QZNMT2414089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e0872ae8b6616f8e4b01b38a03887fe535da834cd4cf4cd221381a513fdfdc. 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/QZNMT2455912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf9e74f0eba823447ffff0390ffd973ce320a6c62fc5a298062c13c4dadaa39. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:57Z), 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/QZNMT2455918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c4d0fc8e5cd9dd115b70ee90cea3cfcf9cc9f6b9b48031dc74ab1b75b7b57e. 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/QZNMV2408646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc102498f573d9c2791eafdc0a891932433c2c78d5ab4fa1fcca6104e6c01b3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:56:35Z), 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/CH7811114696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb07d2572723ebb88e4a40020b4ce9571529b888d3fca79ab9bcaf17e30f9129. 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/CH7811114366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1392f51a37657a66484d48ee8f331e36cee71bdb6b02f5e84e9b3dfea597455. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:15Z), 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/CH7811114365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07474e72339f495834ddaf10e913c977f22ec93f421a0b855d0ed067b3adcc05. 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/QZJG52536068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9e3d719881b3a619c1c1dcbf2eeaaf00573a4befc463a4176b4ffe01852202. 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/QZL382526064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bd18862c3bc019b7929870c77f24714d074bb5554b519cfd714db63d1c074a. 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/QZL382526066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff822fe0a5ee77db7f2b2695fcf61587e0a260250e51cefe34d9f00583c1479. 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/QZL382526068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab13ed0b8d0f3591aacbaebbb2fbe66c738db5933de2d1d15107672c262f8c37. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:22Z), 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/QZL382521513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb302af28c944502880017a721719b95ce998f71460d9e7d94c1dcf52753cc60e. 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/QZL382521515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21927d169c70c5a69230800f424810a6b4867ebffbaef6262fd3e63178fad820. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:23:55Z), 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/QZL382521511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39dbf51f0f8ab8a55147f12e07a92a58289e3901a57ee81665451d0d0e05d7a. 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/QZLL92522273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805daca86c4de90a73f41eb6a5b80834e5ddd57e6c2750faf1f779ac0c00534f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZLL92521698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0362310ceb80f36fc1f51dbb38f29f7cbd0ec307b72591eb0ba8fd5a774247b2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:48Z), 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/QZL382521516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3c7d0377de0f8d0188b870f0717b3d6319644e4c62b8f540467d4dfef0f083. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:53Z), 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/QZLL92572529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521ab99d2f0eafb76531d4e1f5ec9157b8b78cc794dfb354b58235faee51bf0f. 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/QZLL92598909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665c86cfc1d179e847b3eff7b42dbba4a50504909eee330c19630539731d570. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZLL92598915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589991b90bc8e9b966483afd363563d65fbcbac104c43b0154464e4864bc954. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZLL92561100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d88ea07f29d3996ba03c874b6b74f00aad6804f84b05f49d15d5c305ede1f4. 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/QZMEV2547659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0881b546538fe7f6bb9382e12951417d4222084194e77ad6632ae6adbe6b7a5f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:41:13Z), 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/QZMEV2547660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec0eb78ab078695efb8f9271869fcdd8c2833a744b20c43741ed160e065d8ad. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:59Z), 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/QZMEV2547662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e10b35e966833dc292e4425f0fecfd93bbb5b50735896195c2079f53475eb. 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/QZMEV2547663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b9976e1b1fa68655fd0d0e8adafe256cf5eee427cd14e9fca6492350c3be7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZMEV2547667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f3d2ee2007e1359fe978993fb468c65b5a05c359837f33bf29952d1b48aefa. 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/QZMEV2547669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b54739fe03dc21b18711c904dd2fb7419dc614600df55ca97cc64d70f3dd9f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEV2547674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e5775d1dbc5f8836ca52f9f7fea9d93123060d4ee8258e73f8f08b7eb499ef. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:17:52Z), 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/QZMWW2534888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc243ca7e89771713a98d0efc78ae43ff5be281745cc86a5b87faea66992822f3. 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/QZMWW2534895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f47fa2d5fe94c3735a0479f539c10458a1f01ffd28c3f48004302d3e8196d5a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:02Z), 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/QZNB82502456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed45efe7139bccf287c7c01eec79935da7db713386f5b2eb12e256a14fb45ab7. 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/QZNB82596322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc243ca7e89771713a98d0efc78ae43ff5be281745cc86a5b87faea66992822f3. 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/QZMWW2534895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ef05784d42bdfc8f8346ac96f3ad991cd5ea80e6ea1bb7b2473dfbc8f57941. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNB82596324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16020ed32f475471827528c6ed3f1be826d63f9f664bba1a959e5d592aef559. 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/QZNB82596326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c62ad2dc5a3a5d40d85664a4f9978599e985e0c7a2963e03b286695c7956d0. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNB82596327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b11ffc0a4d7a8b70e5abc09f054ec366d879f7ae21f5eb868817ecf9a35c53. 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/QZNB82596329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8333f83202ad1bb18d441a22117caf83941dac66b7fba1e0744593643b90388. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNMX2508985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48108e604c7a728313779126894edca67a64d724877decfbdff224b3c66dd030. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNMX2508986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b93ff7f76e3c07729e80b842888f4bedccd089651a9b783816f48b55d177da. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:14Z), 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/QZNMX2508987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c86927051babf270af30b0d1d05999a411caf4c1cff19db89d0130430847d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62456599.