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 0x3e956e4a6c4884ad5e6b6de2cb1a13acaea4177d451b4fd8cd11f3386a9873ea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9de02160-862f-4242-8cfa-9f9a0f597a1d.json and https://artists.proofprofile.net/proofs/artist/9de02160-862f-4242-8cfa-9f9a0f597a1d.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 0x9292e1a434ac0c97a4a42d6a6586e697941da5f07b1542fa9f43778187487772. 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/USFI20200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d22232362dac5ef963215c96add211ed0d3d883fdf076bf2a1be3b40f93ee. 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/USFI20200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd1bf9d3325c086bc2cfeeb3d6d804d99f6fefc13ba444bc4e5cb2450ef1cf4. 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/USFI20200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c966d359ae14fd6779bc8c27189cc78be600ce0ef3a2d931ad335fa93eeb705. 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/USFI20200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecda66f61d5e8b3f671fd5aee6e8cfb9b3f3668ca05c5a6b36120d979295ed7. 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/USFI20200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8eb574ee43ce096760a60099ad6e927d3c8ac44a2f0be8ab0935aba9dcc894. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USFI20301454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1c21d5b8be91bb41f905789fc1c7f2b44054906502523712f596f73abc42f1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USFI20301457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2ee5ee349686a6ff059fdc6431387ff2dba1e8312ca9119b9e78d60cb95a5f. 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/USFI20301460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f51e7adfc709e70456ffff8883bfdbc4c2584e3c08964976d8be3c624205de. 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/USFI20301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b16bd8e7fb2f8b2f8fb94fa17a8c32211ad959ddaaf283abcba5d01bc10b38. 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/USFI20301456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adcf84f1ecf4d377a6f4cbdc268dbc64c6713a6391c55b03123d19989014a6e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USFI20301452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8d93509c80e4c162366426264005afeedbcae3f9745fe04085682219f7d6b7. 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/USFI20301459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683972d27696d003989c3803a3ff9795260f23d1f30b0c7e27803c1ba13f245d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USFI20301458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155170fda3c4ce2f2db70eeb63e22ba4f5e768430d12728ac67a9f18f835548c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:45:32Z), 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/USFI20301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315bb1fa69eaf261392f19c644713d06da7a1019bbce0570eb3dc5687c2f8137. 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/USFI20301455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bb46e8b28b9b2c16d57af2d7452013b01d8d094b201061ce07c838d99d746e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USFI20303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332e6bafef4db1cacc7f6c2f9b695bda0bb17a3ca203450e446d3b02b3fb5270. 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/USFI20303030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9260e575ccb740f5b0b2d9cb1a37c3d17b4f253226fe20e9b51749f0d2a4b4. 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/USFI20303034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e25b339fbf5a7db2caf2e3ff1e07e8d91327349bf08c924673226295bc9d414. 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/USFI20303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7e7383847a10d033f8fc40ce7d290e019603a3b3022ac093f70258a95c905. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:07Z), 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/USFI20303036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d97617353451cccec51b4ff9ffd864a475d75af0b40a617e00abd8db7a26ab. 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/USFI20303035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd39e4e449d830bc93e53751511ed012dd1ba80202dce856e5b8bb17c3f891. 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/USFI20303029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0a4a3679950fbbc0c50a25a4ccc2ba1ecd472649329d432d6aed3cb94ff6ee. 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/USFI20403327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c350b5ab23f6d455669ea2d0a25642e6f2d4cecb2b01e8cd4f895a2db872f8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:21:27Z), 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/USFI20403328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14cb0ea896ce8e1d7bc82a78d4ef5ae5e98a541b81eefffc4f7c725d6963230. 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/USFI20403329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd355b1c529d9f48fc7f383f5be018756f42ac8901b404a301afa7c4271718754. 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/USFI20403330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4b66b214e56e5191479e5675d6dd4a417c6bc71434b5c702bda6815e958c33. 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/USFI20403333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9235ba99fe0fa55221f5e99a04ed497b1718aef95f5c3fa6daccfd227d8e4deb. 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/USFI20403336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb063bc557a54adc02815ecaf4226e7bf1c43a937b28b31ea6afd505c526348. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USFI20503949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a4db2e4004d52900cfd05d889b60eac07dfd506144a76c4a36127b4bfa296. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USFI20503952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3fee44638b8a718f96b21efbb6ca3db4854ef29572f0d8ef3894af3b9076df. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USFI20503953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f5c0f5ab5db78668ee390f94ae3d1c0957453c51cea07ec994dcd8f1ea8c9e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USFI20503951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb54327e90dd9c4ada614a6551ca1255b0c488b50db5fa4bbcb230bce551430e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:39:17Z), 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/QMDA72202000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a322f246139a8d92a42da653950a7ba4c882c8ea9ec0989e4d657ae07d23e10. 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/QM4TW2374937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20a55d5590b678b1a4db683e19842f49f4ab91934e808095d44180f43bf5aa1. 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/USFI20301449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5272a5874eadcff457c9a8ea0cfc632be17b16f2b845581602345f6b77e4be97. 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/MXUM72201061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41b7a795c1adba1aaa03918b4e6ee0f71d4f0f88d3ddfe2f0a4f5efe817adc. 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/QM7282354092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bb28da253eeef9f467213982b243b39d32826a0c3bfa73257248c4cbd82aea. 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/QMDA72458692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f63d2be5bc1bec81de20c6b7ac8619be3c4a929c72cdda2537462336feedf7. 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/QM6MZ2226732.