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 0x225055597611034fdb25896932952ef7c5aaa90659aa4ca96a71e360fecd06cd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb8005d0-6c7f-4af2-b717-ebd4e9d79853.json and https://artists.proofprofile.net/proofs/artist/fb8005d0-6c7f-4af2-b717-ebd4e9d79853.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 0xa5b6d9013de7c25ad638ba6991aab36fd160f91fd8eede60abd0ce611adabd18. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRSTY2203127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445ebe1b5afba19c6a2850ebffd03110873eedb7c5a929aa26a3af2119a06de1. 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/GRSTY2203129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d5e79c946f78412d34fbc3220543bfd4d79ce1dcc68e92e6e3ecaeab86eb16. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:58Z), 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/GRSTY2203132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20614b265385a629374c1c02064bb1d9066b3cd10fdf393a664b19fd1f29f4ae. 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/GRSTY2203133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02780b3972ecd03f156dbc25076435efa596855783906249778c74c2a5334835. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GRSTY2203136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24abd2b2faaa12074dbab7518d49767c3b680ae82b98f4cd260969231ba3546. 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/GRSTY2203140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0edab6846373ae1bf0a0c4a46b8ae8949b7251118d31861958af6bafa1ee84. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/GRSTY2203144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948000f3bc2be352205af472a1d928de7b83e00fa11c965617a932600d27a444. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/GRSTY2203154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff35d28331dd6ac3a052914456832699689932d4f5ddbc6e8cb1658e7037b34. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/GRSTY2203159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c31bc8e5aedd080d5ca68a7e3b3c818c6016f268a8943162115383dcf1f46ec. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:24Z), 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/GRSTY2203160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6b598715e0cf189709499e32c10d03279692c6e4323fc5e717dc4a99c4d664. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRSTY2203163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaedd4093888998e787aba9cf10ae6693f995c3f65d6686c40d4085e75b1627. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:26Z), 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/GRSTY2203193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170b30d10ad2b918fde1900a5608e188936015487b045d6f31750553cfd89fd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GRSTY2203194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a337969689fe36ce4aa817c83927f656e602d421a805ad35afc18b1e47a3a65. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GRSTY2203195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272fbd3715ae2ffd7de2bb103ac6702eef6d84edc051758ff89a81e8f0368327. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:05Z), 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/GRSTY2203200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f596bd1ebb0e3934435292e0ebb35d856b3427d489f9a1674bbb9817e762e. 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/GRSTY2203203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efd56112f1e2f2beeb7a2fb9a0a1440edeb097f99e730b1e597d0062aabef23. 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/GRSTY2203204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3712bce441d85aa05fbde36430226d7f70b5addbf3bcd7677cf26c8743ba735. 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/GRSTY2203180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42a8f95e9f8fd1e31d62c54cde534d34a89f81bed15aa8c1562e00964821e8a. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/GRSTY2203181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76decb752f83cc018d18fba267a33b9977baee274298776790bbff00bbb83b2b. 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/GRSTY2203183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1660b063209bf9c2953cd2df331b8123a391c0b0e09bf39af66a82d6883fc923. 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/GRSTY2203184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83119942154b1b2178af6dec0fa18917dca0bad7cd63f78f7dd53c42cd032a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRSTY2203188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d5d6da7a701b264c6019d3d86c66f1259287bc8e783e39dc163a7a613a9e8. 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/GRSTY2203190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d255866682da8aa7752cb5e6428d88842a18d65d09bfaab4e739d99e4fb026b. 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/GRSTY2203167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f3fe28adcf7f1367b2f3239636eb74c3ddd64c3fb7a559f308642d2c4a555. 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/GRSTY2203169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42305cca46e5fbce72dad6c355b5fdd0a1ce3bd8c340adb698faf802fb8b3ab1. 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/GRSTY2203170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f2dd15619e6adedf4b79c6bab35ae36b834126c7fc98346921ebfa561846b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRSTY2203172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459201496b7cda1d4bfb8cc446678c27776305c463d4aca2f567ebdd77ce4398. 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/GRSTY2203175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dad6f77adc998801d94622f5ac315a36d4b297a2877264448c41b947f9940ef. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRSTY2203231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af345480dd41a9f95ec0f1b76d4e58c2effb482ed630c87d4b5fb9e63c3875e. 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/GRSTY2203229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f0a6495f19d33775c9044e715fa8f15b9bf0299ea05ebc8a5b3fbbd648210d. 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/GRSTY2300760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a71d76f6f509518a7af5197e505d33504c52e46b3f3b13686f55b29639eff6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GRSTY2200620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e034abaa47decee89b4c32ed19a7a37c10380bc51cca6acffcc17d2f514a8e. 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/GRSTY2200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16870a58e607bfa49ba36b80ed8bb8abc66b2687006c4f6d71ee95b791e6a36f. 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/GRSTY2200622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7a562423e72365641d3e6ce0893ce7f6a91a73f07f7632b5f02728dc84ac02. 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/GRSTY2200623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3014e81ce3647115f22a3918f06817a807f4b2473d1f1d536a2ed9f6fc543. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GRSTY2200625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a1abec75662a8c053693b75a00302d5e40ea1525bde83559494183f0c522d9. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GRSTY2200626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165851836ff8267d2bb4308705c6f15f20e57a09fe39d7d3ef2d913ddee6394c. 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/GRSTY2200627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e119fb89b8b743997cbb3ff0d2e3f7a2e778db10c62639ed2c6d2f2402486. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GRSTY2400072.