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 0x048a684f656d93a02210f3bbbf2d637ed61a2cd9637885cb55d679b427b6fb2b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41996876-826d-4381-9be8-e940bf37ae22.json and https://artists.proofprofile.net/proofs/artist/41996876-826d-4381-9be8-e940bf37ae22.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 0x08f01968532f81b616cd16e79bffec5459f8d24b96f2f766ecdd921239ba592a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEH742224004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7a8941eb37c969707604f5791722b855e91dae056fee880081562fe7ec0df. 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/FRIDO2412295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08912c25690ea473a1a4575e78884f70433de350089a3fc2708bae5021cb80c5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRIDO2412299.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc07a1cf55e3b94cd9486a110aa9bfbbb25568cd5562319f9b53cb493a077c25. 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/QM7282410503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bea5f8f2df1d00587c78ee49be8ead249d4b7023c5dadb58b0330af6d0e3650. 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/QM7282410505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1cc2ee7cee7bf86b838a87a47b94b87a17f5d761890aaa06e530e8a6ab92f1. 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/BEN582300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d8db18235a3f2ec72ca2abbdb83b4bf8e89aea423a0eb00683e0419f126351. 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/GX9SP2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da6d6e4d95b5d65ec918e6c20fabdbf26fcfd5460150678abccd97fd5a95413. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IL4092208202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15497ef63fdb56fd4416ecbc08e01ed2e37ebdcc08d9cfef5d36972c0a884fc1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/IL4092208201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb985d4b5e2e688137c3bc1e63a93f2cd04e051ef72c6cfd1f21765954a528f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/IL4092208203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30c46ce15bed5dcec43c3c77993df4954c522b41747340023a8d4fd1c2d3eb6. 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/DEH742202593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1084888c4be509c37cbf2e7e310814cc2d0ace05c85e1215b3e1042ab31672a6. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NLCK42210391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6251a6fd2d3c67fb5d0e0367b7f5b08fed83a22eb292471f5bba345a9a4bd86. 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/NLCK42210394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb582ce035b746476cf6a61219b5b824924161296e657055325bdb3c2381b9ae. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLCK42210392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c8efad17c318b5b026ebd69bca4b0e1738f3f1f95058514d9975839d0a084c. 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/DECY52003402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5771b2e698695e623747013e9478c7515e7f99f4c22bdc0040f9eaaeea82621. 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/IL4092007605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5099cfa7d38490ae90d589252dd5c33ecd42437fe27955d5b3c19406be3a14d7. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/IL4092007602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ec64325589855d31e0e6dbbef2e46c38ec9e076e01284214e375f7ab2783db. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/IL4092007604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a7b38735e517901b45b8ba8a1ab61b8b13c310e56172c472a7860828903d40. 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/NLMH62000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ff9f120eaab36ca59319ce9b0739b0a47eb50a5628287cc97c710a47d1af5e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLMH62000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a965864f05c293494d060df757f4fb8e1ed29289c60f985a380a0029d11451. 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/DECH61700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9b634390a1a2173c2583917674f54066bb71bf0cb94e37b60212a73befc232. 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/DETB31792841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd48ed28d4279a3fb554c10a0d54677dc396e697d54e742ed25d9dfa5ff219b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DETB31792843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ff138beb07ff0a50ef00e78d9f269f1eee6ba032ec7c5cf3f1f21a031d9ff. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLCK41037212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6627d693169fd127f9ffc0eb1dbc265fa25b35a3a70375a00c40354a27dfd959. 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/NLCK41030967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6bf4ef77a925a0c18e647bed1fbbb96f09664f7bb9f74f9f18e8dfb2beb3f8. 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/NLHR21400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da33677afd712fac761c336571218044281df8b7d13629b4c348d76e9fd39ac. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/SE3JM1200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bf13d2984249c0fb432c00db7e6bc8afcf891504c21b13d7ee0311f462c8db. 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/NLL562503885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710fbcca290846b4d8f684b5c4e72682f97f845b016a7aa9ab4755813459b5bc. 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/NLL562503887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff51fcd2e147f6346ea0420130a93d6e789b8fee77fc7ec3b61f523a53fb7982. 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/NLL562503888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acf1f941560ae409697bd1ae37e5b15c03c5a913c30686432218921c50e9d1b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLL562503884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756214c68751de481dc988d1b1b6b49a23f99fd6bc4a73bd8d26b24bea84f9bc. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/NLL562503886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2946d95edfa355c2366c6de4a425f7f9b01e4c936d571fe742daf3cb7ea4c5. 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/GBKQU2535126.
Unknown Landscapes Vol 3 / Mixed and selected by Exium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552dc5e8ee597b12c4023fef52d9e32f96e0b91e03dd83a0e6575fa4321c8e71. 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/NLCK41029291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c699751728635916d658d5c5efb41f87eec973973c3ea7c34c3c7dd687c32. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBLV61717117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857333d9e773da580426c01cc3e12ff9d3b6ecfb78c5a57cc92d70665ad8c5e6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLCK41089736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf9cb64c345be3362eac0597e9b2a8022c0de1eb392eee952a0042f8377d1b1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEPI82310509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c70ba8f7f289f3fb3e97159a265b39a5181fced4e6c7321bda1f13619b0fb. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DETB31800119.