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 0x168f1918d7a8b0bb6192b9a164ee10a1365ac5a76033175c2524dd61400f365f. 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/461e5388-ab79-427d-a217-4a45598730eb.json and https://artists.proofprofile.net/proofs/artist/461e5388-ab79-427d-a217-4a45598730eb.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 0x1829dbb0a4abf191e815d3d2762d0b2a63a4d87ec0624fbf24e36150cba86920. 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/QZTAU2156902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7eeec712789069b76d564c0fd1dbd544cd4f87ff6d1ebfbd22afa7fa39f888. 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/QZHN52231517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45951e2bae095178ed60ad2bc0ce297e50ebc8cff0175986ee7266e31d116a88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN52231521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70dfa0e8d022bd1c6ac1b9c5f269677fd0df991f90b922e3360d0a104aeb37b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:00Z), 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/QZHN82264444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cf4eca269ee4e1bb43cd38815fe1c8e5ca0781abd248eab707adb6de120749. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZHN82264445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5bacd4f74d7e12c53b3ec9be8ab0b7a2c202990d1307e00927af609560f487. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZHN82264447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedf45ccceb2c2577fe987fb8dc48ce35c5f1c9c524708812cbd99bd74fa98b2. 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/QZHN82264448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f2d3e92a3820843d9c519e654dffc589da1cfb0ec356e1b4fd9371599ee97b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN82264449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbb01750f3ff0696d833962074497f5d2124a7564eed1e375bfa18f848555fa. 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/QZK6Q2256471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c68c1e0f81247869fab0953f70672f5a7f5a7ced7f5ae3fc3eb481505bd7748. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6Q2256475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833f52ae97f1643d6abad57827da06d41da330f78e49a124b7d775937d8d371d. 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/SE6SA2256887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa48fe400c51e559dd53e3b8e5a0e086c22a39d5c74478cd90b9be102c36dbc. 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/SE6SA2256888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2583f2a2277f4ffde14499cff7be59b7172fc3d4b3263d70b88970a6740fb2. 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/QZNWS2244471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef351a1eedce8fc614f86de913048aca5e9379b4197bd4fe7829e316a7b3806. 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/SE66N2262907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46e8b6686fb1fdd76ff539e2ff1053a9c146a200503a40e6a59b1393be2d66a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USL4R2238928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd186963c5b524af6aef28899866a0a1a234679f9cdfd6f441cfbccbece8171. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:34:38Z), 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/USL4R2238931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b0b48f33093a0e0c3a713077ea996a0b01fc2391000d404a8ce7d271fb861d. 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/USL4R2238932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61551fbaba2da0e1591d6448d4efb822d5a0676935f76734328ee7ca7790ab3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:31Z), 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/USL4R2238933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4024f64c3556da07dacc4a5aa90cba7345ab26b400cc62c14a0ce538b40735d. 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/USCGH2373884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190903fccf0c492509e7d6e38f5c584b7d836946f22c064877d16044a3645879. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:28:35Z), 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/USCGH2373885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10c7de420676b4e2e980729931b1316fdda5d24ff116c62018fd98a262e6a22. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USCGH2373886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb329ac54be680edcee83d8fb8f50ad5307040dd4eedf784092cee610c996ccf. 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/SE6HN2353374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd77daf05efbac8ecbfb4bdcd821e4e8941d671f24f4f74df55bb1f9ee4520. 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/SE6HN2353375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144f1cd14e388e8034bfd52fa143dea15b866e5fdd7d6e348711c8b686942455. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/SE6HN2353376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1379dcf425fe399e79571e936c871119e6358d03683ec7761cb0ac1193fc395f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:23Z), 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/SE6HN2353377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156edba4ddf0bd23a6a177c303ce4a2d27054990069c3a7cfe3f8e635ea4a102. 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/SE6HN2353378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f93fab6f42886a608f7558baa09f630574f0c671a26ae2f3ba85249f8932fe8. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/SE6HN2353379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e41679e6b2d0b3c147487d9728eaa07e47138f1035570acbb6344e300b789. 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/SE6XW2352148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979e78e82715bf730f2fd0d4caf4e69d56819f1081fd49bfbd8d1b7bf29bd822. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SE6A92346130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e3d13e5433acb08278e63f047b67fcfd1159956e5241010fd6440d07430003. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:41:04Z), 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/SE66N2308496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526a6d34bfce3697e9573b115a4ecdda4a321758ff502cb893ad7cae553f5d4a. 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/SE5BU2452614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e3d13e5433acb08278e63f047b67fcfd1159956e5241010fd6440d07430003. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE66N2308496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02717963ea5aa34e68ffa3d134b75993187ecf2892a79e2c3a79bccbb8b5498. 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/SE5BU2452615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc69e856e74bc5661f962bd2dc22a033691885c99418344865d26083be905e4. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/SE5BU2452616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca6a528a74e99d5d4819380dd38f23be9ff6352ce57ffc78ce9e664a9e2e04f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE5BU2452618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704a85e1d8133aabf3de017d29df79a8eaba411a85cb2fbcd55a613fa3c6087f. 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/SE6HN2417896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440372898f2bdf28d6a19a7bc6f505a686eb85127f7dde176a53c269ae2b5ea4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE6HN2417897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c0db243686d23d3e00e7c47e1de6e492c475e0b4838c2943b70a30cecdb72. 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/SE6HN2433064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70010db89772a8134d9c256e6dd1405509e5aa3df719b818ec941343b21b772. 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/SE6HN2433067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa921fc2841cb0fde578c5fa2de150929a6c690b1dcdc31f306f33fb1f17483b4. 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/SE6QE2344360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3360cb3a46a9e4a0acbae286fda4ae15450b29cbaf6bc064bb221616a90e9e0. 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/SE6I32314443.