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 0x72e4ed3c9ffb18f38b2d54c062c44297edc4b7296fbe0c87e2601f35c3c4ffa4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/067b0fd6-5a98-4703-9434-689641921ad6.json and https://artists.proofprofile.net/proofs/artist/067b0fd6-5a98-4703-9434-689641921ad6.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 0xfd7e3675e94b3ec6d0e86dfda17c36e052f12e68ece5832e90fd458338cc837b. 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/QZKDK2021968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c8b8c70b2e5f2fc35bbdfb933624c8cdd9c8c732e865c84b65763372aebdd1. 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/QM42K2147545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3720b80642ee3c5d038965b9cda3a5ddb3f6409d90a8b446f417ccc617e2310e. 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/QM42K2165417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9b7e9e31a3b9c4f6547be773bf81b7d1b44a4197c72e1fc4a701bd1fa7fbe4. 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/QZKDK2195025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f45365cd7cfa0dd6a92bb00b156a4f693f586fd7877408214ba219cc4c813. 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/QZKDK2130264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c5112c05d689e444d5c906d11235f545e29ce8290b39cb36a87205f665ddd. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/QM42K2198706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4397b64175cf6bb10613200c90708b71e1936123dc7f2fa00b5265c20b465b1c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM42K2194480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17aeb73236fd2aa89a692cd5d354c10b3a25fc37eb5694a858decefe3c0ef3. 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/QZS672162591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703a63087671b39af5ccd986131197146028b1041bb2546877c4bba66df50d26. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZS662187556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f66fd40d2b6deee234005bcd54209fc17b08137604c32c687cdd8b38fcd2e5. 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/RUA1H2306906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9924c8e276348c1be92fc74a28d6d876a49408d8d0c2a1ee2da896dcf708afc. 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/RUA1H2306933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ccc813fe4c8ae57dae4092a7569bad15f77b5c9c5656c5dd245ce3d731a882. 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/AEA2Z2465689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b21690d7f9a7fae70e7ff45e6ae08833a21f2542d60d7b209d5e75813d7e52d. 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/AEA2Z2465691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897b79eb8c98b60b77d076ec3e39f0ce4e3489a79b0162f36925b97b0105d17. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:39:05Z), 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/AEA2Z2465693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb59428b7369751acec04ad1816e5d1c9ab39f9b0bf87bc810d66a3351489e8. 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/AEA2Z2465694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf6f3a1682bfc35d61a3b2c861cda2098e5cb77e8bae4fd3366757c3225a4dc. 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/AEA2Z2481569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e806d0c998f793ab69370e6fba4956758fc8e45fce320a5897f72296cd3058. 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/AEA2Z2505175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce235674ed7cb395e972b365aae14fd8101f03a9b00c130f59944016c2bd40c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AEA2Z2505176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461409e491046ef7112d2c6b0bb7e9422f35ccf42c3d4eccc58ada4c5e54780b. 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/AEA2Z2505177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb5f7041ebd6cb24a6d188ed7861f46fc0293710f985599ae1b88a2947dda5e. 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/AEA2Z2505179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddc5ae4eb7309e717b9111d54b9d5a3fc0e96148e5747822d742083f2b7eb04. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:55:25Z), 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/AEA2Z2505181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87432a7d8ceb3082cea1bc270d28bb91682e19630fefda81c7634750122e11c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/AEA2Z2505182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e2f058dd07b9d7d323dfaac0b82cf713d0a6b8d2cc7e71267405d966ff7dcf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AEA2Z2505183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7c4cafbc8e1ce77e381c039fa30d071f9e2bf9d252a918594f971eb63c3b0a. 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/AEA2Z2505184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f47822ea70cfa0588f8e00fac2bfa8b9a01c1144dca8b82057a588538ead0c. 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/AEA2Z2505189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301c416ae7e57254db275726856736fb53d0bf13368c309f9116e74d4ceec782. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:19Z), 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/QZDA62578321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68e6eec2b1ffb61ff56ea8e91bb852992b06e85c1ddfdb150f7946851e20d9e. 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/QZDA62578325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663b1bdf9e58cf4c55a243f32b0104a7fbd536e6bc89633439ecc1bda58be88f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:28Z), 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/QZES72572051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3290e045bfdfc068beabddae43fe4931c931c01a99fd793d13990689f7d9329f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZES72572059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1a6f339a8e612dec21c2378498b8dfe35c8c5ae8a2def920319f9533fd3352. 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/QZHN32578046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838d0fc43e0c5327c22b6a8f21a7bef4e29b6db43cf7c416955cb8a6bf25ca87. 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/QZHN32578056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45ed69d8c3de8095f0ec109cadb59ff4b7ad5f21c35de559be7ecafdb2b3fb6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN32578060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085983cda9a021264202933276aeaece38f2ff54790031d2138cd9644a46eda. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:38:25Z), 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/QZHN32578062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4538a806a4b6ede1f3b2a4c75b7d7e5fe389b16e1a80276364a023c34c25415a. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AEA2Z2545078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525c2179db12e754d2ba33a40e88cd1789d690c87e5afbe8ae53d01aa130bcce. 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/AEA2Z2553554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fccfbef6f6d38f4c3346636ba2bc84dc894eaa75bee3e1eb38f95f877545a. 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/AEA2Z2557336.