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 0x8d866b209e72ff4e6b8a759d2dd21d433b3d624c276ba61600bd7bc1877dda46. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5d3c325-649f-4953-b758-4de8f7d902ba.json and https://artists.proofprofile.net/proofs/artist/e5d3c325-649f-4953-b758-4de8f7d902ba.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 0x2704d2e5c98e71102e88c5c7b37f12bca56ee809358f97440db0ca21364ed4ad. 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/QZNWX2434915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409eba774d39287f68799edc3a8dd1ce44a9db8aef8b9eef62b5062c72c9d56e. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/QZNWX2434916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c9f8c0750fcace99360006e7ab5665436e8e61f9db7e456ff5b0a44b0ce88. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:48:12Z), 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/QZNWX2434917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729c06b90aa1354c8cfee40499d027239f79e1da862af8e19c23113edb8494c6. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZNWX2434918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b00a61e79c840168a0d64c540bdf9cb018161f18570e0d19a8adf112b186942. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZNWX2434919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f3dfff7b524a589e410cbca0493e2b3b87272bafa542d0add9f1a444283ee. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZNWX2434920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb973b37b5c5628264221c3db42cdee26846cb55e68776d6776d7ff16be484. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:50:56Z), 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/QZNWX2434921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ce6107c018e9e5d3df0ca9785a68cd2fbf445c373bdcd25f19e6fd3e4bdfa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:40Z), 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/QZNWX2434922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2a539ed9c7e82872818b017a8188db0c5f23beb1435063376ab4f0ce8f5682. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:08:31Z), 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/QZNWX2434923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625ddb7ee22edc4f79262536170387f0253cf2d656d43c9b86e681832b294c3. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZNWX2434924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13140c52bbb67e07cf0d93795d03750ce5860ae9761e2aa3a0eefe74d56c20e5. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZNWX2434925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7a678991c0026b1ad686091190e03f1f84daac6a08673ac7a11e1199e2a0c5. 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/QZNWX2434926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0e3b422bb3a763c5dc6416ad97babd7495292d8d63b55d580ecd9e644183c3. 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/QZNWX2434894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d78ba4acd4eba3f6a2539d3ca71a16f6377a626b542b01d455f973af1698d7. 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/QZNWX2434895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf319979bee808b249563c31ad725dda60c11089997dfda5bcf36bc305ce920d1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:49Z), 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/QZNWX2434896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bec1055770d600ac72f097e68fba821cfa804b7d6071a70ecb7fe85213167a. 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/QZNWX2434897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9157ac9d3cedc777a993dced65b9ef399aaea40c67c48d3c9f94cb3f1d9c3b23. 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/QZNWX2434898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d8e61a8e7411f8d0ff33a3cbcbf2ece43eb8df80d0b184af630900beff8a69. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWX2434899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66175e1a19f6b36305b103165d394bbfe98d47edce9c48a2b7e15e78aa44354b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:05:26Z), 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/QZNWX2434900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789c56149413b52b05e1b4820a38c738175ff55aac414091da6ffabdc8934f6c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWX2434901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa22d1ee72f18aeb686b0533d62dbae9eae4417542f0cc4f2d16974f520bbcc. 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/QZNWX2434902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa344103306e790c54ed1e8e9d2c51a56a85593f72cf3dedea81b35f09d233c. 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/QZNWX2434903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cee5b4130aab9c87c2208e262da6ccd9a00724784eea1bbbc8f95699244b078. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZNWX2434904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb5f94481239b9ff49cc45b00df2395f0ef808afe711168044e517c200646c6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:05Z), 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/QZNWX2434905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354196f0fdfd585e77aa0292ef6dbce76f64c2a116af0f5d9f59cb011c6455b7. 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/QZNWX2434906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f65a22f4fce2f9b2e2f07a3e1b4e2330019ba5555bffef1d6f0ab1533067d1f. 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/QZNWX2493749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619bb2c04e33307dc2367cbb704aa33a86b6a86c5c28523a08bcda8703dd73e. 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/QZNWX2493750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1853c3a3cc1ab644de6775d07dd4487f854e7213b33f5d2db666cdef2c1daa. 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/QZNWX2493751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148f31a734f88b5019f22ba6ca159725c6ef52abcb60d88435b9f0780b117236. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:23Z), 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/QZNWX2493752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4462db9cc09e2842d1a35633f48087548b3cabda7068c64fe1848de4323cd4f9. 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/QZNWX2493753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf313794082e9dfaca0ee376e31563d84b519622134a3288569ab97ed91386bc6. 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/QZNWX2493754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd47969def016821acf8fbf7f7ff7450b03500fe98284b6e0ba53d8fc43193dc. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:47:53Z), 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/QZNWX2493755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd531aebeb8b218c1526f9491d6db41592c7515ce462b0246cb7a01c737430a45. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:52Z), 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/QZNWX2493756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8336351d19c0f955dbcd3a6f4107ac1c4eeb27839eb18b7900e55767f4090e23. 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/QZNWX2493757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4072dfde3902d6c876dd9e80590842355ac0f247a8f9b7bd07cb997bdcf0c58. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:29:12Z), 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/QZNWX2493758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35167c2494b674dfb26558e8b3049e4f14b190e089d2ddc858f840156ca2d05a. 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/QZNWX2493759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f06557114fdbb1f901e0d6e943779fd2e69ba65270f15c0e16ca7102e3be5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWX2493760.