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 0x54644450e7ccba381c26dd7284a1e495827bd3868ed569590504e6a3c805e608. 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/6008551a-cd03-458c-931f-9c4121d2d0f4.json and https://artists.proofprofile.net/proofs/artist/6008551a-cd03-458c-931f-9c4121d2d0f4.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 0xddf61dabe73cb5de4f0b590b49032aff8dac9ef4f0928688b2f7ab23fed07571. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZNWR2139437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca11c915f355bd9dfa616c926f5bd27f618419e3c0d7afb5b01a466c54b528b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZANL1709940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a94c21fd17843c1e5c0d5073922d18b53e8f4e872edcf84a17aee10ebdd6286. 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/QZANL1709941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb0f5e5c703bc1b027c718efa693a6fdfa04a14c7c11f9ce8867bc2836e7a8. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:47Z), 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/QZANL1709942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86050540c8db0c8495fb308368bc7b9f4442271d41f7625659c0ea91a744994. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZANL1709943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad36083f8230e2403644213d185368ddad208d75bed9111e0fdb8ac7a0a0876. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZANL1709944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d54b3dff18957393bd10b793e4f38b5c0c6ddc723a74eb3dc185c37a6e9809. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZANL1709945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf395be742b74d0680fd813baba01f3677000470cdd990720c926188cb0cd96d2. 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/QZANL1709946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63ecd81175d6a5aeae5e93d44457bab1e75ce38db0c78d70b8d7605db997a7c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZANL1709947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533f26431b6cbc504110d413d0ab3681a23d2f7da3fc14e92e8c0705b7e53d6a. 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/QZANL1709949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bde55645b3944154521a12c82b613d6cd5600fa60947e3112b52da0e062425. 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/QZANL1709950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd468777fc7a4d827bb32b7b3f274ca568ac877e960b411d0ef87ab3bdbfef08. 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/QZANL1709951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1318f9ec9c27c4783ed2fffb578c62276417012e563c4b3568c11a9db73f3431. 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/QZANL1709952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d8c2fdf8b617c8d96820abb12a5aa2261cc8ae0ee202193012cc1d4882c749. 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/QZANL1709953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51518c993ee8f0e8b68321903eeb3ae0e111cfde22d4d30e279787fd2dba26f1. 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/QZB4J1888786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f313a5c2eec310e0137d36bfa27789479297df678a23c81ea8510730037a56. 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/QMPKX1866628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0915a2c3293ec01ede0300ff9e8ca9439278f171589f6f83fc77e6d36c1da4ba. 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/QZDA41929318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71067bd1031227a66a9b6b7a3084e81a5e0e3164ee647dc9c2b86ebcd75b85fb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES91979533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e53a4dc16c6cc1b8fbf0a6e04cedd4d7751550a807768205fc6dab486e8f7f6. 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/QZFZ71917081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3efc77f7e5542571a85d9fd6400c71a238473de03a2cf965750049f9eb599bd. 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/QZHN31905739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb244036c078833752c0ba094b466f189e9b5dc027ee4c97f4e86fb8f3a482b6. 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/QZK6Q1960998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a295420b2de84ef7be1e1bc152f0eb2abb34a3af710f32accfa4ca2700feca8. 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/QZHN32066792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fcb2b370e54b13d98afa76f1accb04b455eae4b96fe8cbae0d5593e22566d0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZHN32060504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5639c75d9e6edd4569acfa6a5c4bc70fd4e3902d57f2cdfadce694dd10e64c2b. 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/QZMEM2007801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5639c75d9e6edd4569acfa6a5c4bc70fd4e3902d57f2cdfadce694dd10e64c2b. 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/QZMEM2007801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde85a07d05c2c428586030bd797cc529fb757a2d0c846da4e47020318a1de6d. 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/QZMEQ2014595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9e180bb547c19c2adf6bd0ee54be38dc22dadd7d27585a50417bb568e0f99e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZMEQ2014596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd42feab950b1f417400cf7548ce23dcbe754d2dd0ce952ead5640bbac370bf3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:46Z), 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/QZMEQ2014597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5212e1f29a14cd74eebf6fd30db3e025e4b6c45ee669882a29eeb448010bf14. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/QZMEQ2014598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b864daab3a5b3ce19d45e802e82dbbdfaea9f8d184d2c8cf8f9fea0253f5ecf. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:01Z), 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/QZMEQ2014599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5855158fc84c10d11b466acd0348a4a2c3fabbada450c6715c8f2ed3591dc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMEQ2014600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fee7b100da8e3aa8ea090ef6609c828aec76eeede2d7278a879d12d9c3afc8. 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/QZNWS2092246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5a1bddec38872151cf0f35882d9cf488e6ce7a84a3d4be21436fbec3414ab5. 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/QZFZ62164231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35a58bad264ec100ccb77969e206f6492db0baedf4086ab0ea2297232a6eeed. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZMEN2130451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38331346a8b2d79d588ea76647087e72b4aadfd2d84e87e2e0a19a1723aa44d8. 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/QZES52319530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aefda14fb3757d006e454bab9048ede60f9e6a9da2690be225597a499577235. 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/USA2P2348420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f804ddef67433bff73b054f01c146f137d4d9690efd345cae6f2111c41bb322. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22050204.
25 Weeks Later (feat. Akeem Mimiko & Shofu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127fe08bddb5d2ce9973624ff0cc9259c08990153a03aac9879a86289adad0e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91757922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4a0731c30c19a6d1354c681cd280d17bbed0f1ba3ffc65c91e369a4e124c47. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91730386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fb2acc1ca5c9b915d67a4f57108f7f29c743205ff34c1db034efc5a095ea0d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6N2011631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d664dbb55fced43531fb6793053928325d4dda792049193d812d7d3ffe2b93. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72004905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1987ed2523df74d85a380553b47b9c2348e4422f4ae33d50019cb7c6aca61b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6Q2025523.