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 0x4090904b275a1761475bd5268a8f2c9ca2ae5723e51bfc3a30ef49bee58000c6. 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/198176d3-49af-4436-b008-4fcafa5b6f73.json and https://artists.proofprofile.net/proofs/artist/198176d3-49af-4436-b008-4fcafa5b6f73.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 0x9028ba010a11d02f4889df183d9f861d8b5887db11a6b0f793e01ff43ede0a1b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2306938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61debeaec154087e4090872a6a19f543c304ef88226439fc7211b8363ba3c1c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ22271103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf346d0fe472a3aad9ce9f95bdae4e8dae46686197a8503a8c65533b6c0496117. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPLS2136689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c2443f4a2d8e588387e0c082773fe19f4025d79ddfef2e2864301e79fd1fd0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEQ2129756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71abd4d4f7841ebbfdb6a3a4fc0a13313f67c86b537b7b2686ffd90a6bea69c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES92114858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb14415fa3d154a0ea00e647e72da8102f65dca0350dcd409cee6695896248. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFZ72184453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d01350ecea3c14842221fdc3ec7995d716d7e13d0c6fd1ea547751a0b74bba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWV2066971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf316b8606f18b2942861275d97c26acb7f13da938f0b52195f3af4af4e96a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWX2097647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48693744f7b39818253fa971a17a9309d92902ca7a26020bcdc0d7635942383. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6G2263477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec36b0d3768f6d5f890791526f00f14ea66e0f12697320abd52ea020302c9b33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES62285770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d07bfa685abb0da2647d1772999c6fd07858f6d79d942aeb70ab4cbce54a51c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5022300966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff769b0ec47295e6bb2e836051a22676f4d36e9b2fa658ad96efc415d475eacc. 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/QZHN72122366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fa3143fcfa846e916e9e8e0162e837516b4e7d8618ca53b2fcb284b112f243. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN72121089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5516b6b5167760a38e92ae7994aae9b01172f5497f6d2a09cf6c20165a4b3a54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWU2002330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d4d1d391e1a6f604ae70cc4ce86152c729567b5fcf36bd562b99689848b690. 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/QZHN72122365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ad8b72cb57723910c329e58ef850c419b8d42c90cd03781f5f97f2a2f44b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA72181398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c1ca8978c11e6d6b9fe4fb177d8e39395c76ece6ead42f341ab76610b71d6e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN72121186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a81be733b82fa57bd0e7d171101a76368d5479e6a11d667d3900e918a36244. 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/QZFZ72184463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6effe4757c4a2c233bfb46a8ca3553b9f7321ed899326d84fb8cd2fbbf0a82f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ72184457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4e5aa2e0d5dba665628d56422edaba194529927bce1184c3ffa5bd5b510c1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5022300967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cec60b447de52ed5e64f083c1db84c1d5c73438c0d775121ab799c49dd970a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ72177813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb14415fa3d154a0ea00e647e72da8102f65dca0350dcd409cee6695896248. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ72184453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968287ac3686b8f01e202a7dd5effe8c0b31be4195672dfe15c405d28c3fc193. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYX2128264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b2e568be19ff4f5cec6c6556bd73a26a5aeed85a1a81f0205a918a0bd2c41. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ72209557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd3773e0fb033003e20b9641a9eeda9ee5f727f93316cc1b210d169afb6e20e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2425026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caa3e3aa3e025a22e3a775029d2cfe90603f528c46ba62698261725fbd2dc5c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2333656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71abd4d4f7841ebbfdb6a3a4fc0a13313f67c86b537b7b2686ffd90a6bea69c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES92114858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf316b8606f18b2942861275d97c26acb7f13da938f0b52195f3af4af4e96a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWX2097647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d01350ecea3c14842221fdc3ec7995d716d7e13d0c6fd1ea547751a0b74bba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWV2066971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07afb1d76fb02a2005fae8aa38b8882ba5f30abee830998f7020cac1b409ef2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZRP42102260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd4a04d8556f5612d7773fc79997abfecc47307ac50e5dcc9bbdfc56ec5af23. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZDA42171373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e6c5392667ce1c7a6ee69ea3d05203d35333f5ff3b11004671e83eac6426d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ72260439.