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 0x86d53e309cdb87dd51ae5dd667cbc9be127388b82868041313022984db9ddad9. 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/af169176-a76b-4752-8387-b828d49607aa.json and https://artists.proofprofile.net/proofs/artist/af169176-a76b-4752-8387-b828d49607aa.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 0x956b30e9fe18970d83f8292ade001ea435e60fa8dd9df5187d2265cb3bc771c1. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:41:48Z), 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/US4LA0714502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e1b6ad167ef2298c94fb59166c1aba788036b893f168eb751c17d72b7b1d4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US4LA0714503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7e7a4f42b9129d12737fa1ab7c967c5a3768d7cd26c7d13955f86d83af23b7. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:49:39Z), 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/US4LA0714504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388b296ed64432379cf8b56c8be668f2f50e90302aa832ef565ff14f4ad11921. 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/USRMX0900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885bd1d2fe55bd09cf3725bae6ee847f07fe62db76f84d5c82bceac756492f47. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:45Z), 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/USRMX0900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5903ffba97ae7c9105fada7ebc5976d0ae5e748fbf58c8275efe543a9460020c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USRMX0900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea886f5ca9177869c8c443dacb245875638732ddee157ea180c27e0ed388b3e6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USRMX0900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a17211471c1a05b38539ed46da27a1d985c26067fafae13204f1f82b0222c9. 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/USRMX0900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe79748a5c1259ecccdbc8fbbdda30d96569c45cb027c7bad7e8d9cf6d28a2cb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USRMX0900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b38041400ceed7e2c8eca501ec99f8b145a13ff0601428872f167690003200. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USRMX0900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44625f5b50c38ae7915e697bf720c932ee59043ead516fc0473cc9819192357c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:17:23Z), 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/USRMX0900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef876133b2b2e12fac4e784ee2b5cfb030154d39a8b4e915e22040886826885c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SE5BU1905532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a59e6f333f99ee4be0e1b2a77af3d4a957d47cafa8139cd3952a796c9101a80. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:17Z), 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/USERN1007863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c206e20a9429662dd94ded73f6e0ec34b6adf18c431b3b9afab3da6ab4d0073. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USERN1007864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a66b76b884ccc27bbb5f8c4950b3cf2f2554e014969c3daa8dd0e139291e801. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USERN1007865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee5af14296a67e15a4c9fbf66cee9bc6145bfc81dbd77a391f54e86a1873cf1. 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/USERN1007866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19734214aaaf1b67e2beac8b93c6629908f65773e24ce7a50dc82bf2a6d6e0c9. 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/USERN1007867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aa9f04e45e1f63557ef75246a4603fec3fdbd3b3e985cd6d6317fe2e115d62. 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/USERN1007868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc1cf6a999a664e24f117f1e25b700e91cd812164cfa1eda320ee3e3d588c9d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:12Z), 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/USERN1007869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c52288dbe0a122f2a73a542f124cf2f01c3a6d22ed997af979cefcc1076f7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USERN1009198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87277758f4dbf120ca4072bf44f688ebe42c2254f0149a90adcf8a64fcda99d3. 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/USERN1009199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb87a0179f39b9fb985c02c5852fd7bfc8255d42452a06b6e78058c66115738. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USERN1009200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4396210fc258220b299d39e9577a75a802e03c10e25544ee26e53132085dc1e0. 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/USERN1009201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd08360300ce3e9bd7c22e160845a470768f94a6015ee645768a807c986b46e. 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/USERN1009202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7d7b7e736b11696825c030ad4a59b8437d4efc8ad8fc51fcfce5fcfdd890af. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USERN1009203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac300a427dcdba6adb5d160fabf02000ab90f0c37de811497c42b363ecaa181d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USERN1009204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39605acee90e4ef18e2bbf43dcff6060eb462195fce0f31b6915c9c9160942d6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USERN1009205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900c8ba9e605192be7219e6237fd1bf2ecb5afba359eb24c49ae8c4dbb2a745. 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/USERN1009206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c75684abb97e62720ce29b9b7a55b7e170aa133c4a439519d2575082505730. 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/USERN1009207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3456bcc0f3599d3a25a05eee1f38f70b59860874162dec27b03639fdae8c9c. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR8FM1800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d4193eae7d0776abdc516d8367efe608009b4bd30908ce4e9d5c8f42ada48. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR3W22200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3660a8ae284653c57a40ad7ab8a5c6596eeac03ef8eccf9cc9be05ce53ec72d4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE6XX2399991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517dc27462931c69be86b5ec33ad7bfbcda679e2c5eecca1df7e4825aa141187. 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/FR3W22200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac5a62061057a98df59e1ef759d236da36a71c6285a9fbc0100713d84b27c89. 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/SE6XX2399992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34b8a004497ce318cf7765e2f92b6f6cbfa62422947709e32a5ff6c7a55b3d0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6XX2399993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc51b74a1bbcb5ba27570deb670083daf6d950a0f8e70f43d19ceae49a67c4b4. 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/FR3W22200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c95e95ed9bef0be6d034d5c61d2290ac07b8e961d3b22e98924197a2fb2436. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR3W22200006.