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 0x973d3d728400c7d4a43576832a4a1d8fb3071a20c6b8bc139470769abd6773de. 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/f811bbe1-98fe-4756-b115-f7a59289dcb6.json and https://artists.proofprofile.net/proofs/artist/f811bbe1-98fe-4756-b115-f7a59289dcb6.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 0xbe4384f3532068d81eca8058a0cf78a7cfdbcba2de293b0af5a318e814855396. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGD2298854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5b24544a6e828a110d13937a0e8425bfb04be1d43725d72a9d839971432336. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:54Z), 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/TCAGU2380363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf487886c7f7f28ad4ef549da3722a3fc26e8a0c828166e60422853fc6a6b600. 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/TCAGL2273965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d566ebbd7a8396d321083d6ba1550c22f603513b58767a0b5b18b1696c769. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:17Z), 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/TCAGL2273488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb568071a6133572a6792a13d6862cfe1733da2b408f91f2c9ca2521460d9c3e9. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:27:40Z), 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/TCAEZ2042448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c98433bf37462e7ebadb981a8b73122f26038617322eb8f0d9f92f0014e5c5. 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/TCAEZ2042459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02b80281ed5fdabab9a23d1e29a12d7bf412069cdc81780b31fc8f125f9a3aa. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAEZ2042476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cebe702d0abaf8adf8780dfa93a3153e173e22b6ebf24e16a5cf8fa38749c47. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:54:52Z), 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/TCAEZ2042498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2342aedb8c742b31509e0bc1e7e63d088c2c0f3e8fddf007110cddecd6982c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:40Z), 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/TCAEZ2042508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d8551257dd5fc89302238825f248770950988bc62310450abeb1221082e59. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAEZ2042515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a928530c53acf115616d6ed440bc757de112d2a205f0ecae8be937ef77852a2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAEZ2042521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320b5c39afbc946f02b00d29cc86463f4d3031ccdeded3b580878e0fd48bb27. 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/TCAEZ2042536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8085529dd13bedb552c674678ddc244f13a92c00e1bce4bf98ea7243336252. 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/TCAEZ2042542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000ec7e4809cc57fd52d98d672056287c7b5d54538c12c7b90ae781a1149ffd2. 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/TCAEZ2042545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ddfefe1f0e0559817d3c4c6447617c508838ec33a60a93c935a1f56fdc4fc. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAEX2038260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f43c644b880ea49b2f24bc799c56dc06a0f93faf490b8a3dd95e7b2f6de6bd. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:12:35Z), 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/TCAEX2038297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f3e2244fa7965e04e4c79b5bb230c31191dc5c2bcd5d61dd338f7326e0392. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:41Z), 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/TCAEX2038303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d6515093847a90930fe8599363c8e1f89d78dba4f173443b879f038c37a7b1. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:06Z), 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/TCAEW2045098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb264087f0b1d3c770f69e0ba84fc785c8fb135cf7c7810b7986925b86eadbca9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEW2045110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936facd84d6e11838da2672254db198d17b7caff0b85e5384bbbd4b8f492ed87. 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/TCAEW2045275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da723597cbfcd60e2f7f94ba4acd6885a3b27070a179d5a339e63a2ff545525. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:43Z), 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/TCAEW2045282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8850f2120c88ae8b86f7e6183f358df1d7ed3df3f64c665d1704bb1797b7918e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:07:37Z), 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/TCAEW2045287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ae7c3a4090fed19ae454c445349fc9773c32242dae9eb3b7ae309bc48de4c0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAEW2045290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a154ed596ca1282f91c53c3dbcfbef4e9c11e20852ebdbf55383ec270df490. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:03:22Z), 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/TCAEW2045303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2792fbb27360c817e5191ed40e67623bfedf72a3f9b8897f7ff225e43057482. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAEW2045311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300239e78e6da35dcfd8fb6a426456c61cfa8aa1169de8ef624010e4c770c51. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:33:14Z), 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/TCAEW2045316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f05e1657f7f946b5aa7e8b460a3f610d7b753ffe8a6e1a22f8e2a4c4dfeae. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCAEW2045333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba311292861d79fccf0736646de554abc8b5d929d92f18923006d21f78d78ba. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAEW2045340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d68fa2837817ba7efede859e28e168174af7b306976439e88a5195725d0183. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:43Z), 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/TCAEX2042061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5434d1cbc490af5cc80df915e7015774e77325da349d08a59f3a45c390705f19. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCAEX2042072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217830785945021af4de9477f81b074a71c40507ddf4b4785ad6feae9d86354a. 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/TCAEX2042084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e055548857ea5664c83e5607790f05b19fbec9a744a9efdead0176e28dce222. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAEX2042098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb0231be53cd1e0b336d70af218bed9d4fc1ae4a7942b78c867b40c4a2c3674. 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/TCAEX2042113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec52f029c3217429c57280c6e31520b367612d62c4ab98cf15dfc73006838f3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAEX2042123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95bcc3e3ddd0c85f9081a5b9f690c72f00e721741a76f14f26afe2031ab9ed1. 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/TCAEX2042131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf9ff152c365ee3c213ba840eb05f0dfb59981d4bf0f45afc0e893befa40dde. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAEX2042137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a515f19a3a4da16aa3b96cf85c356dc705c141b720b4fcf6fd9935e887c0a26. 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/TCAEX2042148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5725a6d607242b48ac103b9db492faf032aaf5a4aea4c0af309e1766a7d3a0. 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/TCAEX2042156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89445ab8a7515a693dd0c2cabcb2df50bd4a8cb6da2288ffce0730639b24381a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:50Z), 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/TCAEX2042162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2b89e76366412eafbf28c8199b401cb0eb29134e28719e535566c88ac8dc6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAFD2022104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910ffba7fb1d388a198c457b92158086c74e92bf55d0872d06a32fb686d74d23. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIO2486320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85310f709a8b2f385d920b88063ad19fa3969d633ca15e242bbf8e3ef910c437. 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/TCAJW2500242.