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 0x5070aa3e32b4f9bceb8dd5c03f737af00f12d7512544a7dc91be8445bd203e31. 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/7e70d36c-68f1-40de-8ea3-a6e2e3dcee19.json and https://artists.proofprofile.net/proofs/artist/7e70d36c-68f1-40de-8ea3-a6e2e3dcee19.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 0xcf0efe18c64347fcb50a6878e54532fbd48845737334be2d646dc33cd2de8be1. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FR10S2154118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8132899b1fd6538b6edb694fbe19621929734f39bf180ff6850928c755722357. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR10S2154119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8121b1a2f4431ee1fcd87fe2f6b263910a30e945fecd344c57e1fc2045c9818. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR10S2154120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f866db6e2696b47fbfe6e418e2e717a4b7716a3d71d53fb191277cae17f3ab. 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/FR10S2154121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350ab84010b47213b0d022e775120a52f9f70d8ab39a1da7e2bb90d2b7f4d6b. 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/FR10S2154122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b2097c53e9912aff7172138e94af07c6ecebe7c1d62893ab3b35ed31db3b83. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:31:55Z), 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/FR10S2154123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb582e79e03a9c4eaff68e4bc05f3c0cea550924716ef9cf1ddd243b09a7a3e49. 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/FR10S2154124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93be74adae5ceee5f1cdddbfeb98e1f955c988abb6a0d059bb351a5a69d17055. 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/FR10S2154125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd2053248cf4438c1de9605daa6c171aff7e62de060c6105b40e443be119a6e. 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/FR10S2154126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae646a75fa4892215b00dc4223c0bb19e02244f39573414321894290037930d6. 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/FR10S2154127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bca331bd3adf36228288422c1b713e00da0004c9958c8763a64d40d5b86302. 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/FR10S2154128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bfef8ffe76d99cfd3603cf0c17c711ff1a85565fb4f453992ad1a13cd56e05. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR10S2154129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccb850baa86f554b34875b8f6e391132f26d00bb7ab1b46608ddecf809c761d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR10S2154130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c25abd306dae101982ddfe95d85c4e042633c7aa06a6cb371252f92aa659c13. 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/DGA072457611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f300727f61182bae08df46767ccc49d1532476f35106aa905d57fedf82586ab. 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/DGA072457612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cd0bfdd57f61dff9ce5f6531a2db8cec730932615b23943839abf17831397e. 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/DGA072457613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b971659a74f63ca5b635e54201cfba09ee630e99d169f8d3c5bf6b2e4e47402. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA072457614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da4573c26c2a5567038d13b18801bc202f237258e272aa70ce2923968873cf. 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/DGA072457615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c499280f842376f830df0b4c1213eb423ca925919dbb623f88f1de5b7ffdb. 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/DGA072467095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6822a6945f2fea24b076a0b641c8172f3254f71392beb5cd232bb2f02316dcf1. 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/DGA072467096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5fad78f51155ce2767f0df2274f5dc771a8b29a67cee3bb0f4ee4f2442dfbc. 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/DGA072467097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b6fc1f450fd2d72be1faf747b45fd8509369976e58bdb58e1e1860c3b4b7b. 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/DGA072467098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3433d65a02220230fa436232f61036824d5dd863c91826604ba20a47b8b237. 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/DGA072467099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b832699b0144567f3babf2bf06bc4e362bdff5197845e5d576e88813cd6fb5. 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/DGA082412346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e5c5d348a96e212556460783b10e97c8c6363df1b9fd220ed4fd881fbfbb97. 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/DGA082412347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6181cce54856270e95c315a1c5484aeb4bb70db186d40ea02021a5fcbd817f. 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/DGA082412348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15d054874ca2d0f014f2be455cd457537f0954f541437942fb375f721f98971. 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/DGA082412349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542d9b94a76046c7de351b7235a5c7fd399990c124605171ccf0a020edcd2b00. 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/DGA082412350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20bc2d7058a2db1cceec7ad90e8be2d134a1e2e4a3179656f2634c3117dee43. 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/DGA082412351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe702f856db12d25cfd8e48b179d71d132d4d508bf1ff4c9e475fffa98d177b25. 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/DGA082412352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8edd554b592cf38eac66f6c750488a05cdc6b657c920a5dca6a3feccbafb04. 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/DGA082437455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73982e1544ef5353d69a5e68826ce32c940ce7ab37d137a9937751a93a5b498. 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/DGA082437456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7cee8feca93518a0eea58ec781396f51dde4ea2ce17f91b80990a61e5b7f63. 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/DGA082437457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72c0caf13fe19fb2b4242831b02f9b191be281ee078500c8cef466641e1755c. 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/DGA082437458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a77c8c317e8863a3dc3b81bafae5f1380dd4f1fd7378b914528a0f475028be. 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/DGA082437459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f36134568c496619d4151427409dc43084765e6c43c4fef986599c2d71f99c. 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/DGA082437460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f82711116b2a53b0f4f305e2994a0ae101b57be8e5e02c6d14965605c45837. 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/DGA082437461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf848ba5e7e43e1219514f68f377d6f16d07d3d0957dbb3df8a0ec17bdb4bc1df. 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/DGA082437462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd2f8a6ee1285b3c1ffcf2ec966eb36a1003b59dd72c5c0760aed4fa41a1de2. 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/DGA082437463.