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 0xc8ece86dccaa4122718622982ffe6f54f27a5a6eaed7986b1c14ee22214b1bf6. 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/8ded3976-ae8d-4ca8-b5b2-a36a8ef15ab4.json and https://artists.proofprofile.net/proofs/artist/8ded3976-ae8d-4ca8-b5b2-a36a8ef15ab4.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 0x082a2ef45d00371939afc58742ba401e990b2bb3824437740fa15e1666894185. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX53U2035976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94224532a33001f98365ae3de3dfc62382049a7dbb0401b5d8807f4f0a161d. 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/CAENV2200522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea4006ba2700396822849605e540683ea4f1934ce56acc004bd624d16040d9c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:23Z), 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/CAENV2230314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9430e2ebb3c28e4037329ebec106e77708cb5a6431761b5018b126ccb3b80884. 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/CACWV2300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d562884423aa8870af20ce6b7ec81485296411eb58848221d7a35451e26d496. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAENV2344808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee1828fc206bb8b952cbfd232211391050762a0aab9c35094434e78f66bc3cd. 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/GX68N2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee1828fc206bb8b952cbfd232211391050762a0aab9c35094434e78f66bc3cd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX68N2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec388a5cc29940c99caf51456b95d621e1fb75f9752555ad953ed13e190b94d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CACWV2419270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0255db0dc80cc824b4cbf451dcc1dbbc6548e7f06062c85552037978b60fbd37. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CACWV2452750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aa4816ae4122d4b8045fc5e97749e364cc40f09febb0d14084e8a02344d3e2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CAENV2421158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ddc941d615870a73cb28db1580be5ac2bf87c9e885331c4208018edee41ca5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:13:31Z), 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/CAENV2464231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb254118e6e4d536065e422797b07e524bfc98414791efff9fde1952e4e09ad. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CALVP2465098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a81fe93262eac02a681f0ce761069681b2b8a028b53ef404fa6e82c49d7831. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:43Z), 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/CBEYJ2408530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16e7edf4c7658c7a86f525df9a86a90c6e9a40a9c9f29371e695d490e554b2. 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/CBEYJ2445947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb561651ef3848fcbcf593432d9ad9a5a2b16d073ef8df8de8551b6c3bf9a504e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CBEYJ2485395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940eac9edd68a533ac10df6bf526a9c6366a70a8e6e97c69ecbeb4c6acad649f. 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/CBEYJ2485390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d03cc3ddceaba59bf796bacc34e5b71030e2237393f0d93985961c6bfda0c4a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CBEYJ2485397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5cb595c7c7b817ec9baa3f14ae7f42783cdcd3537b182ed7f05e05ce5589c4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CBEYJ2485399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8b7d85a72e6072e6a50b2e01e8f8453b19cd32e3375efeb93711b81c8f234f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CBEYJ2485393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb14b599f7b9879b934676d394d9c65258385b0831e8fd4c6d2dc6f61c900ef. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/CBEYJ2485400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14fb6db0cf5e0bbcba2922d3a6a581f80df60d542d97c291f8c5d2d3e52a1a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:24Z), 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/CBEYJ2485398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538245eb35dfe5205ac83c2008d308e02cd83826df9cba09d607eda9f915bd41. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CBEYJ2485396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbe9a86c2ca41765c12b89a2bd687ff592811cd5d5559c8842ab45cb4e353e6. 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/CBEYJ2485392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d3444ef49b478b38f9957ef7fab4f3ee9b261ca9247703322e41edf2c54846. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/CBEYJ2485406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06153e97c7c81ca3c0aa27690f1c17f33b8e9229bde68d1a29fe765f1744c804. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CBEYJ2485402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19190804ccb7caa41826b69bccefe565e29705a08b802700dbf7111bd4a2b032. 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/CBEYJ2485389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb561651ef3848fcbcf593432d9ad9a5a2b16d073ef8df8de8551b6c3bf9a504e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CBEYJ2485395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940eac9edd68a533ac10df6bf526a9c6366a70a8e6e97c69ecbeb4c6acad649f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CBEYJ2485390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d03cc3ddceaba59bf796bacc34e5b71030e2237393f0d93985961c6bfda0c4a. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/CBEYJ2485397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e91b3e8ea2ae2161afdc68404d0225c9c572fe21b6fbbfd3aae7931f931994d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:28Z), 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/CA5KR2532312.