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 0xfef9b3092d6ce036197c3cdc58ad3dc2c200921ac8533eb4c33e4fb6561f816f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db32aa56-2879-4a89-99fa-834c59bc49e5.json and https://artists.proofprofile.net/proofs/artist/db32aa56-2879-4a89-99fa-834c59bc49e5.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 0x77377bbb951e1452ef62adbe314effebf47268f901c88a9ad7f9f0f0cc7e06b3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:33Z), 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/QZTBD2435099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f89fbdeeb146155b9c49666cfe8b7af2a6ee9f98923f06bb8265964f82fc1e6. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/QZTBD2435100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a45b5c4a41adddec26a62e42559c0cf5b9fe60d65dae884b8f1fb6615016f79. 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/QZTBD2435101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532e73e7d89f2d47b5eed087e215716205dcf83e29faf530523294234740c868. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:23Z), 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/QZTBD2435102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c77098fb4595e15bdd659e514c20d5037941df7f2d613ab8c6e4af009c0df. 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/QZNWU2416412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e9ba4ca0073c55af0e9787e4b690bb3acc11b762c6325ccca57850231e7ae1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:32:17Z), 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/QZTBD2435103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43661d18f30a14c24addd6fcce2fc754498b1e11909b409b1bd95f8cb99b97e5. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZTBD2435104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86030385c6901f05813d603925784f4bcce013e48af51b83972372ab8a3c5130. 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/QZTBD2435105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf153057c3802e7635d99e0101c20cc5c66fb1bba744071c58fce729d9cb1ceb0. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTBD2435106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3581a94f4a324c67cbb8b950ad3e66dbbce462f7f4391ec7569059971d15d3a2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:49Z), 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/QZZ7R2409513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c016aaf640a6e10d2337736e4d967b056c2ac34aa4db832ac06f524726dce2c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:33Z), 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/QZHN32516803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac2c852ec2c7d9f7616115acebeaa4f5256402467b04a92921b3edd16d8bfbf. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:26Z), 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/QZHN32516804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ebf5ada715a7c21388d6f39bbcbaa551884171f496a9499e509db74d590b82. 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/QZHN32516805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953ef2c5fccddc511fd71f5a337516131146f11b7a8c3c51a3a3caee2f920314. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:44Z), 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/QZHN32516806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28b1f8d8cc8c4e102fdb7ef419468d0d097ac69bb10a919bcebf64bc193f453. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:39:11Z), 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/QZHN32516808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefffb73bd05a3fa3ec54944d8dc2481cde12d608a9f79698e4901c56b920e03b. 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/QZHN32516809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb517143e200002765c503fe9fe2faaeccc0699fe11f279a8218fecf4c4ec2d7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHN32516810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f3da5b44939e1b05934b9570891a938151d0eda556bb80d8528c76ffd130e1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:57Z), 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/QZHN32516811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf186fcd4cc9cafe540744d9f31e5501816a7ecc066a1638eab513d2c0cad2d4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZHN32516812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3122955c18cbd50cad4afe06bd562ef171a6285f0d05c535890e9e86ba75164. 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/QZHN32516813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad8834ce8d11c61509d2b50681d1fbbe94f1650785e3f5128052c990c1daa6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZHN32516814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e68275bb3cfe0a400733cbb656a95f72479b58bdd5ccd77498aa96d07954ab. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:18Z), 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/QZK6Q2523214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646beff3c3efde651ef0286babb3fb2bc441d4b0a7f128febedc7133a14f0008. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTAT2583143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1e6e136dc403528f089cf30ca853e7aba457783bcb8130ba3257e5b37f6e06. 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/QZTAT2583144.