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 0xc3125336b6847c4160e02d87b1c5463ccef9cdfb4c9507bfb855472672b39415. 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/8fe9ef7c-ef64-4a8a-9736-36da8774314d.json and https://artists.proofprofile.net/proofs/artist/8fe9ef7c-ef64-4a8a-9736-36da8774314d.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 0x9b1f4a452029edbbd9c903c7ddd3031abfb9639473217c80ac7882f048032dc0. 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/CACWV2036339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a135a1a98670d0ea64bf915d37436fcbffe2544ae381a2eb1fb0e8789c0ecd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CACWV2036341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfe1c9ad395792e20a806a1b805caa4780909618b7b63bf5caa1b964ee84e2e. 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/CACWV2036343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6ba9d21c9b25a8208b7da565b451746a733d112c5a37599e2e0828b47e0a85. 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/CACWV2036345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b618569b568d111c97be8b38cc223b2692c4804d1bc68edb9c81f7521500f8a. 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/CACWV2036346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4240934062ff63510f8879d1f8d466d44f9cc2f185a98aabc11917b378ae5fd6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CACWV2036347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad60cb836ae537bf35267eb0cc779f7a3a2c5aee82e3767a51215c6a489ddf3. 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/CACWV2036348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6950e2b31063af2eff46fcc06baa993c181886970eac3fd88ff6cfd169789b9c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CACWV2036349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf780ba502863777ccb22b96d498458f041b7ea387c4dea6ea3c209d208d7d369. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CACWV2036350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235c4265d337702cec4226ade1e6d8f2a0fd3716d41b9d2d16a415a41af8c2f3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CACWV2036354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef0e305ad88549c5c456dcdcb30501e59f7efd2b26cc54260ad75ec30a31b1d. 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/CAHQJ2013034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a29ccb91b4feea273df7eff2a2dd5d0703140c685133e3ca9f368f0ee3cbd66. 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/CAHQJ2013050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30359d4f287f46a95f96210548d4a79e180781b47747dc321184297759221c9d. 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/CAHQJ2013056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468fdcc3bf4379f4c5f007f149c3594b37a3f15bb6b980392b3df4a0eb708ff7. 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/CAHQJ2013051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4049205d51e89367936f3cec589d9dc680dcb76c7ad430ebc7a470b61195e0a9. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CAHQJ2013059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817751fa6d55543520565272f5e9b24c75db012e4b633598da94a0182dd0b05e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CAHQJ2013043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4139637a2f52d2018f1b7fc271e2b352e5a1896f51405487f37819bcc0cbfa8. 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/CAHQJ2013054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eedc37bf650a899177e59d61141d267ce94250384a9d29605b4b03ea3719a4. 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/CAHQJ2013055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378f08ecdfc27557fc6f2b19999846af2203bc58b66dc1a519abad9c2f175bd. 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/CAHQJ2013061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35222e29f430f168a24c30bdfd42f888974cda2aac36838c3647cf5b556f5af0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CAHQJ2013060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78fe8054530783291e2c95dbed1c742daf015b50b807493554756127b58cc96. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CAHQJ2013063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350adafed7aa5769062a3be078502072ca46d5fa6208159d07f81b4bf7fa84c9. 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/CAHQJ2013064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebd540aa2d767561826f48745a86e89fd207a90a6bbaff18d7ed0d46bad990c. 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/QZNWY2275766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41477175d2b656753da2a22d10cf16f5c85661a42b9efeb5aac27ca5e8505b7a. 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/QZNWY2275767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eba4813c1a51fe12e6f55386a071d2f82c05ab07a0bc6e0c1686ca0cf13df0. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZNWY2275769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4dcd2ae81b89f7da24372dd0c4e1fe7177139acb63e9a3fac14e6ad7a6cabc. 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/QZNWY2275770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfecf27c30b1d5d686497dbb0aac9de541b624e27424ee2d38e6bd6f8e5fb0ae. 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/QZNWY2275772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966b52d1b9d518661dcc5de6db3601b22938e45e2f189ffeeb029f4c6c631508. 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/QZNWY2275773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c9b1c19b2552454c4d2e7b16d4ba85b4ff29939b268eb337110ea3c98dfe66. 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/QZNWY2275775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c69ce419ac549ac8bdd386e7a6b08904ac96da13e21edaa4f7e9942298c6e3. 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/QZNWY2275776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe1b7c6e9aa7a4ef2a2ffb0405c15efa77c3c063f3426c1803bb7f4f3135c11. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:44Z), 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/QZNWY2275777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9fe1bce632e50455bc61a3923d9cd98f4bd2c4d77261decc8441a61cb71a97. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWY2275779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c94a6a4b01b2ddda888ed5e0740db44e2f4a89e617ef7d533af60a6f7d41e8. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZNWY2275780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9af8afb349a88a894d65605f5bf9c6d4746b5f4d840b5076b3eeb013f545a1. 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/QZNWY2275782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556fb5db77753d9316b65a5715517f5d5ba60042a320afd60d970bfce68cef86. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2275783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80eba7645f7eb47aefdc5bea6012b4d6c55539e3f51a554f66df96cecb301fa7. 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/QZNWY2275784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791390ae71058e940279b5813b06d38c717466edf92c7ee173dfca7a502e0e4e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNWY2275786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751ad23a9f5d962def83d00329293acbea582a9d3384325c466cf57630477e2. 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/QZNWY2275787.