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 0xc88dce1e62ae987697933846d5eb6c7d1a7e4c5aed71fa7d73946c4fff36ce1e. 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/858163b4-d66e-4433-912c-6ba18113d6f4.json and https://artists.proofprofile.net/proofs/artist/858163b4-d66e-4433-912c-6ba18113d6f4.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 0xaf9f4b2d2b55bb2f0a89b12b763eebc79405761cadde8938dca0acc8cc5b52b2. 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/QZMEQ2157349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff09aa64c2486085307773e478ff786fcf4ed43cfec5512b15ebb5ec540c03a0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:22:09Z), 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/QZFZ32296350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc852530385322e03dc72187b55681c093a3ab933a0f8fde74019589cd65e11e6. 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/QZES52257743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b903b37f7798c736674537a2adfb0ce9223d40cfb56443e96420479f1678843. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6Q2211631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8f020b4bf50f59cacf864e235f53307546eb12b6977b893ff4333dcff2631a. 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/QZNWR2211346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b339549e46432ba1379255aca78a68af4c298b2b67ba998bfbe7a5e5e0daf8. 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/QZNWR2211348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e445e378bdd50d499f71baa4823b89058909fed08f064a9ab7806e486bb3949. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:55:52Z), 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/QZTAS2237737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9e5b809f09db77b0f258b7ff9b7558e1044bb0f1e18192a586960026938d5. 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/QZTAX2274344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff9ba825244ea5807d66d3725cf574bee6918bec9b0123ba65a8b01c24879d1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN52344409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05877d0f9ad7c86ed1a011d6c02189212dffe47a5a7e9cdeed811839aa29aad2. 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/QZDA82303958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51816a83074071992d509a94da60c14d227c5f18dc18273e9f65a1526fb6a1b8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN52344414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088e02cefdfc64e8e5214492926859dfe79ecb6101742ee822ce7621ec14cf2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZMEP2323487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad0f471dcaf3f0e20cfa007aefcdd8a98a8947cabdc4fbb6c2c86dbc3b4cf49. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNWU2354105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f20448d5fc01e97c1a866d2122005785f9a8b006840c37152062e6bf8396b24. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZTAS2329665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe737760df056cf567d1a34fc8e569c52c91cc50eb2ad335fde6db426a302e342. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAY2366069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66feedd85b602170f971030efbd273a35156e887e57b8cef742b03fe44d26a2. 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/QZWFL2397085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cc0723d71ec9b62f9cc41813a7cca83a5700e0e8b3faa957f157bc0407b2d9. 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/QZFZ22438342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf5a59ce808eb819e93348567757ea3b4a05dfd02003d19d51fea99d71c34e0. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:30Z), 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/QZFZ22438343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed116480d8664eadf2cce1cee6be4448df96f520f584e9e54419631630f128d7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:19Z), 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/QZFZ22438344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc109e6447687101ffb88a3602fd7593fb48b2edf9dba8690bd5d59ea59052a. 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/QZHN42421162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b1c4680043399539a1fdfcf3c3a9253e1540490202666a9990a6808e4544e3. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZNWV2486169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e933561a51c93d896869918b376d1f98b03df8d555e2cefedf019c46241f02. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAY2417175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ea233f17328341db3e79e77e9186d64b2aa3b021389c59659e30dee17b7e8e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:53Z), 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/QZTAY2417176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b1c4680043399539a1fdfcf3c3a9253e1540490202666a9990a6808e4544e3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNWV2486169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58b3ba73edcb2765a78cc4d6c72b67aa259195e5735f02be820e2ded856e43e. 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/QZTAY2417178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe737760df056cf567d1a34fc8e569c52c91cc50eb2ad335fde6db426a302e342. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAY2366069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc109e6447687101ffb88a3602fd7593fb48b2edf9dba8690bd5d59ea59052a. 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/QZHN42421162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ad3177806e55add856ad4f7472014f4ed2570fff5079e8e973a5e55c7a807c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTAY2417182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bbc8d7fdafbd8216668182d432aaf454b55a188ed8c4dceb951e453086c50e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:16:47Z), 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/QZTBD2410434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab8e7ec37fea0900b23f11bb0179cb15401d23d5f831243f4f056ca534febb. 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/QZWFW2432989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb542ec4ba44750ef9ff14a867be9a7b78f7106e27de2d45ae67e4afe7e1b159c. 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/QZES52524285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf415f48bbc28eab02f7efc646f066d62aaf1c1ec472a0873e140f7d36e1af956. 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/QZES52524287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bbc8d7fdafbd8216668182d432aaf454b55a188ed8c4dceb951e453086c50e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTBD2410434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75a8b8a1741ad11fdc22b6245924b25eafc70d7481a89b11a80ba225706a572. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZZ7U2439607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47bb16a3d270b2a4db8b3af5493d5a95a7f53fd403a0bedd26c9372c0be60cc. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZES52524289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfabe46004ef9e1dbb6d199f66566610ee3c6a44f27035e565afb02cb83b357f. 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/QZES52524290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab8e7ec37fea0900b23f11bb0179cb15401d23d5f831243f4f056ca534febb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFW2432989.