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 0xc2ec16cadae882751a1254db702ce1f4a67c11804555d2228580dead9cc16665. 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/fcc77e8b-9135-40d5-98bd-ab34dbc9c17d.json and https://artists.proofprofile.net/proofs/artist/fcc77e8b-9135-40d5-98bd-ab34dbc9c17d.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 0xe6d2826c536b70e9c395ac74fbaf7ff3a2e8085a0ab56896b22b04b344b4b2c1. 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/QZNMU2139909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9ff80da5df77c6e1a55963df8ce8737fbb9d7f8e4c7cbc2008d8ba2b545a4f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:25Z), 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/QZNMU2179938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604dad93a841717711218451ec518c67062f73943acfc665cf5398763f05a249. 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/QZNMV2187398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db86ca8fd2c94804c43ffb8108aaec6d104ab7a23d9896f877e3cf8e1155661. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZNMX2186114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0224f4b95d9a4d7e2fa146493c4cced3580964a150adbca674e96073769dde. 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/QZJ842001776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a50a591216d502e1e423f770ef76c86f2838d1b8074f29786479c53c948fed6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:05:31Z), 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/QZJ842002174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0578ccb743316c2f7a27c1ef3dd2b1541dd5864e783a9ea802a1fd671489ad11. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:50Z), 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/QZJ842002457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a0b79c142a0375501c8a0006ee32765a1deaa5d956d5d936613fddee2d9666. 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/QZJ842002168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a26680141cd30dbaf5ee6fdd7cbddaf31204e364a96a302ee32a6939e8b0368. 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/QZFYZ2373395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f243df2fe44e40c6752677ccf12a65e384cb217d9fbf7e1d00e83f493adb9d1. 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/QZNWR2385185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ea34e5adf520ef29067b2fac52a1fc3879c8eda843e2de15195ad65d744aa. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZTB22358954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5e722c3582b7aba86d8845e0a5e15c6655def21947f4e507dad9e9bcf0914f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:28Z), 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/QZTB62359311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817aa64110bd54608e97dffecb4b880b8f7c3a55d62a004c56a1c5ae53c7552d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZVEM2382278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ea99ee8639f5c384f3b80205c8a56a260aef5525d892b0a9a713280f3401aa. 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/QZVEM2382279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1a6ec7349421b7c4930fb26201c5d46fee7ee46500616d7aceb822e48df12b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:04:27Z), 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/QZVEM2382280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34f570ab9a725f3cc92e7435427e4c95df0226ee62b8d254fa4f2b944d8e198. 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/QZVEM2382281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d47548a1a1b4d1463e60066ad8506cadeea7703fdad314002974e6cc88bf80f. 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/QZVEM2382282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33c76aeca3a4f005dad76ed329ed4387338fbb85bba2259d520a701f9c8c961. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:01:21Z), 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/QZVEM2382283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c14ff4dc10b60bbb334c9490fb09f82f81ff759fcd0f9c339b8bbeffca2e78. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZVEM2382284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4b2f6200a1c118233f15f803e2697d80afac5febdda95de69196d4f1e213a. 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/QZPEW2404998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9349e775d65dd3a6ad530b240ebbc5d56a57dcc0a35bb228244b8156475cb5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZPEW2405643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70371d0399d961092237b58b15050f50ca88bfe581a92c861039e42dff625135. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZPEW2413208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668bbd1c6110454cf788e58a03fa20041873e085956843b5c8b4258ded067641. 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/QZPEW2416788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1015644d6ec22573610e81b3aa5858d9b91174a346a382bf1013fcd85daf809b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/NL8RL2424320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616f4d30c05901d2d6b1fada3eb86d84d18dbf5698ff7d89aef32d24fbcd22f3. 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/TLVEM2457259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69346baa094cee38fa58e7ce79996a069f4c6bde4b70918e0152554c4fa3aff7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT2VB2403881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5673a0d19f7fafbdb4d36ebac0ddc0c7651207d079557b64c13e69de4f321a. 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/QT2VB2403882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363003b52f9e59b759c84ae6efbd050585725449893d525a468d7dca314f0693. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QT2VB2403884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6663b822ca06930fea33c5c88921bca0ba2623bc98fcded824195eeec66f173. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT2VB2403887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464fb010b9b6c21ac402b8a9627cf906a7a5b5532f5c1731664cef3d0f394f66. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QT2VB2403888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba1e62c0f9699632d6fe41ec3e53d7d0b36c34a68b4d72dae151fc8c3bad9f6. 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/QT4K52538275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be9dcaecb2ca919f5e2d279b965d43dabd0834c195c24768dfaf32a21ff2f87. 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/QT4K52538276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bf26a6151d50e1f0dfc779f1492e3288ea403a955fc12a5e57a482eeed958b. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QT4K52516890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d8b85bdd4ec1ffe263f372921fb0f286bd824c27869703e9881d4d7453cd30. 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/QT4K32556162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d09f27cbb8bcec58dbcc95fcb5d4afbb6578a74b7491398f8dea30ef83c72c. 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/QT4K52538279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf312e30223b865a49907ad16f3f7458b348571861c7760cae142721aa434c1d7. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QT4K52538281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2424ec551d3961c4efe5909a93044299746f30c0d3825720705d2af3c26cf7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ62345137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b68a32358b8c46c67e951d65cf0ee2c7a8850e447d6e6313392cb7b58ef0a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWQ2502378.