1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7586a318c0407a5ab5050f656c12de5f6663beffd6dd27d338a801d67a542c9b. 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/f2077905-dc8e-4001-ad51-9fb7090740ef.json and https://artists.proofprofile.net/proofs/artist/f2077905-dc8e-4001-ad51-9fb7090740ef.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 → block OTSBitcoinBlock must exist at that height 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 0x5f883350808f525ec7690b0dfc0696eabe81d17ff8ea75587734187a117530ce. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82432620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1058625278d5f71cd846240ef3c2cf08660bfeaa1c1baec151c45b3b3f5e014. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82432480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbcb0c1df59818880405d5b9bcf40198e97dae3147a55dd84bdbaf9d221586c. 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/DEPI82432477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776ff309d5aa52427323d4a33ad055b1d14ef6f66718eb712c5eff01a5c1175. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DEPI82432478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdc45374962139cd1654b36fab6df3f297330f8cfb0cefd2b2561eaed2829c6. 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/DEPI82432498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55264a290acb14d158a5644a70041b22489db1cfa3a0245e94bbce38f581532. 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/DEPI82432500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f1a007f2e8f738205d31e89cb157856ec33cf88a1d75ec59e06dbeeb976e45. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82432496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efa4d864588f21470fd45e0af5e5dfc01b66dd8aa127b375570be37e161b627. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEPI82432622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a80013575f22657f8e88837625fed80b5e5d4d58be61ca39c78b3fb4fa754. 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/DEPI82432624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7367b4871278d18472a2ed3d98c03de6725d34b22a54077e0d048bcfc1b889db. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82432610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d62cfde5270560dc5424e9ea90a25d9db1947e1cd4e980d3b50aebc37d9758b. 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/DEPI82432611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f216f65756c9a400ed758b1c40668b330ea8d167d3820ee1ebe4744b3ea542. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEPI82432628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb9961c43d468d90de0f35a3bd271c56bffb15bf2fe9d190ef7b3b3f4a605c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEPI82432627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dff27bab526643cd9f83e8efc72fc7fb18c77186233c930bf9eeb190e1e092. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEPI82432631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354816df8ccaede8d2b5536fc4cd39a2d53ddd0c9487e655beddd4db6ba7ee5b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEPI82432630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e8b4f1478ac5c2885db7857b791df0ae35d95f633943d3926d1583eb596f94. 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/DEPI82432667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91e733c6a94a5669e875c5638b109c2b1916733c91cbf5fd2e4b5ac15d13d24. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:42Z), 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/DEPI82432668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f9f3cd01515894820c9d8e288c5187c1cb5a6f67d286f81267aa8b14485efa. 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/DEPI82432669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528cea0f440b6baa00f39dab7e9c52a75a22a1db0b8e1387dca2207b8e59ac18. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPI82432670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb2e8fe492ff5e0cd1d9ea3f1aab0d6cfc448a0527fbf8a51cea85964db2c42. 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/DEPI82432167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a86d31e39a8e74d181744640280beb1dd8f0f4401ee0919fd72a40fccea552. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEPI82432720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c8f9378daffc661441bc2bc0a67e6e91923c5d6f5adeea130c60af914cdb5f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:52Z), 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/DEPI82432717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3f68cf2930f311bd2f132d98078b651d92275271f22bd559b5a2d18cb7f036. 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/DEPI82432718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf189403b225e6c7515defd4e73180827dac550b1135b87e2252f7009c809f93e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:41Z), 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/DEPI82432958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec911ef868e164694fed55349359db538a8b924cd4325f2b5ebf761cef84402. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEPI82432995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb136ce5b689e008c6d058d2491a5e6f9097d5a098857d6c2fb3818eb094ec700. 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/DEPI82432475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732cfafd10a0e6aeb281bc0b780936ebe756c21de7997fc58c753b6facd002bd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:08Z), 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/DEPI82432493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380776028c678a773ed179a4a73db0ae702145cb06c1b1b9d323156478d06b64. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82432479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cfe0a2abe25c723e49c1d7b80f612cc9608a8b04957d2d5b19cbb2e9f774f9. 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/DEPI82436989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f501875918da5f17e12cc02b6b935e027ce741ef19e5127b69d8cd9ec66b949. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEPI82436998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f280115bc1347fea20f2813a045bbd185ac5e1ab7befb0ea3cd921c729f42. 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/DEPI82437021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429a85d0f05efd25c62c724770702130b1b3d75df7ff6ead8324604e7cff1e9b. 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/DEPI82437084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93967114ff6f454f4e4c7a86ababcf8e55b3301f3c1ef8c07751cca9f3e027df. 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/DEPI82437098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cadf4f19ea85b05ee2d5bee7e1fa9955c8fe3ffcd00fbb43d23da920ab13e0. 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/DEPI82437349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed46c6c5ea2e2b8597565ac0cf2a145aa7686944f66e85a639230aaa7892e89. 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/DEPI82437354.