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 0xac4316b253b9d1e601768040745761ed35c1cc1eb8133b48bf14b2e149ad518d. 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/861ea2b1-23da-41f8-9e04-cb95c81ceedf.json and https://artists.proofprofile.net/proofs/artist/861ea2b1-23da-41f8-9e04-cb95c81ceedf.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 0x87089cd7df0450b9ef814a9a4007141fc47fbd354ca8a34487c244d46828d4bf. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZES61954064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5527d4d5a7f21cc4c1175a637eb30c7444ed68366ac2cc8950837f3d8835d7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZES71943223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1012f663077f24d5180da7e3b28d4a2dc246fc153cee98903cb1e73ad3eaefd8. 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/QZFZ32014886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80806411ac7fa84ce56287f565e1bf0ba61d5db346fba2f8b9d4b5c4926d42. 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/QZDA82028824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa803483809e1866ab969f53452b7fb96eca66ab8f96fde7dffd1619d571d21b2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA82028825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70352a6cc002e14332462f58ac0b03722557543e2cabd114ac44acbb555b96d8. 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/QZDA82028827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858ce995e763cf71f5e7f7bedf8f2373ada9d415a7a172ffd0b8c9aa0ab9c5bd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZDA82028828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e77077e26b525d932d85ad83b2d00512fe620f0fff9dd104203552de85924. 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/QZDA82028829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382cb7e07c2d4bf19c9d0e5b7ecafc1941eb54e6527ebbb7ec132f340882fba9. 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/QZDA82028830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8450fb01dab40c8450d1397a141c4555513c93801e65ad1fe3a831c8656386. 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/QZDA82028831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbe71dc74df5d6d79a67a0851cb39b19f3dd8e4fc4edc51fb8c40691f4e1f70. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:14:37Z), 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/QZDA82028832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7b84b7a21c17f1e70265c41dfb32996ec26020fedd6ae5da60ad843c1db37c. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZDA82028833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7f369a864164c7004e957858bb9a1cdf4f367a0d31d378e8294b5bfa381c41. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:35Z), 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/QZES92082394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527ea52e9d89278dcc5fb1f8770dae46732417c0b3421acc414456b4c457dea. 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/QZK6H2058375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf750371de7e99643a7c3c96c16a1e460d5e3981f05f2f5baedcf307411a894eb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMEQ2011314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade13ca881d5a54f67cb13fa1c5a985ff99de86afbffb26557351622675341a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:29:12Z), 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/QZNWQ2040110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017858e6ab3220e908d5da7456bc134dd9139ee7e72c29db84130e8cdfb5667. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZNWT2015459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e006c9025e8281c33056be553884843ac3098994b4828320df224c9f50d93. 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/QZNWW2027034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b4a51f0ead76d9d29a9c67eeceb042fc9bbe5450f2cabc20f6184a949462d1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWY2048636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52ba4eebe8e39589b7e867a6bbb1ee3ed455f48302dca58de16d72858fbfcef. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:28Z), 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/QZFYX2135553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69030d2cf0d509a0925800e9762c179457268f63f25821f15f20bec83f66cb9. 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/QZFZ72138466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145daf2750ee1a2c6af5808a8429c62112498c95cb5f9822150a976c1ffbd5bb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/CA5KR2173630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b3e489d3c45f4a0895d98116077c9d67d01e55d596875ff9cf1cf2c7d01237. 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/CA5KR2189234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec6e0929f86c677a34e1dae65f89371840d49b6de4b97530e4db79153cf0ea. 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/CA5KR0012047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f24184a9db36b2b3788403e215318edf83dadaa259dd96bb55097a53e8e10a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/CA5KR2227704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b994aa1376d6e6499fffb7c3699b4deb788032657406803f239e69efcc992. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:09:27Z), 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/QZMEQ2218000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13953c4916f63d4202a18798a822280b40dd81c3a7af008d8ed448c7dea5130a. 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/QZTB62246291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414b2d8bbe38b0914e618216bd791ffd0bc135989c0e9f2b69c3953b16e1bb44. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTB92297086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff0385905b74601d27cf01f51dd416953c0f55b33bc2ad37c03e9d65a7b5b14. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6F2390943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f9fbe580d2838080b342791e2b0d5777c0a0ffc2c640840f88b2226b677ee8. 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/QZTAW2371904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ab53939db6ac6ed5317cf82285ca6c9020370e2d2f7d9edaa8ccaa810c8ba. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZTBA2375820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46e3c0adf788b3d63eead87a6cae4fad42cc887316e5dd88c05be028a2b7a4. 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/QZPLR2495408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f74b7f0caaa959a45b9921ee01849787d0c3b08070984b47b493d2f72d1717. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:27:24Z), 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/QZNWQ2586444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a2c9a9a1d2087dd75fd29f43703a2f708c020f6c2c3a72c3ded84d3152ee5f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWQ2586447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a2358f82467986a9a63e545b4cce01985b6d62ad5b3ef81bc20dc16b93c88f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWQ2586448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3f1415a5dc4c84c42f50f3767b24996bbbf01c1a831916ffdda9ece786d336. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:33Z), 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/QZNWQ2586449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea22a068080985fb1c3cf0d05bba752ca66e17bb64b8a74edc81265bddcaee66. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:45:48Z), 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/QZNWQ2586451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66454353f828dccf6f654609b06aa3e3068fa85fe0601fe554901470f4faef86. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWQ2586452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86347ea61173c501870d8567dd920204e73c9c1c382a7a841429b3ca4fb5b37a. 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/QZNWQ2586453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d123b6305da2d8e6c5e9ef22e9a5469f55a3bcb225fe79a33d62af0dab2170c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2586455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd477da4187a3aed9a55ae6b69b75e81d4f0d25fd18d37fde05b62613656566. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:47Z), 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/QZNWQ2586457.