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 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 0xf443e0383b88a2a6e3049017a3aee22ec51fdd4bd9bf8b38a77fda32757ef844. 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/271d8e79-acae-40a4-bd26-8cca93dad783.json and https://artists.proofprofile.net/proofs/artist/271d8e79-acae-40a4-bd26-8cca93dad783.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 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 0x81b86aceef5fac0b8110ddc4e73f5efdf6ded7cd9cf410873a99e3f02d571ea9. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DELJ82070349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ece8c28cfb6c4d35ac2a2a8d2f0ab58da83bb1d7b6eb5458813ae45371dba7. 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/DEZC62012171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ccec2b6943240ce1fc3ef97b005c62281996a0a4abc82a593993cfb192b1e0. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/TCAFI2008358.
This town is a dead end, show me the world
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe7c0582669ffa643da2e49ca29d23b3261e64910684e0a7fff814fddff0e1d. 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/US3DF2154756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e63daebb68d36b308bd2ec9bdb673c8705deb25999e544575d63e3c61ac061c. 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/QZPEW2112590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1263b099ccc9d696d19858b26fb02368757578760004933cdaaebabe4dd38cd7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZNWT2128771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497caa38e3f857c96f352a8dba695ae513234d5c98cb8b1a330f56f25964abaa. 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/QZTAS2180123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbecfa825a1fbff4dd9c77c6218186efc88cadc48e3221f76520d7756b31c94. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QM4TW2219774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed777a7c2d267ff6e8674155a726ab7fcacca80c9fd3eca37bdcf3a4050d74b2. 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/US3DF2265731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f7ecc1149bd17407888ff7aa6f91e59c5fab4546fc4a9e182e0b450937551e. 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/USANG2240225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1091686e8912fd53b56bab1d2b1b82ddd8204195a4e38f8bb2d07648f9b8eaf. 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/USANG2252664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d2af93d868cf51fe5e5607bb93eb5e44fcd79e58c2af3f1ec56564866cfa3b. 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/USANG2260243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690cda8e38e999cfbd4e1109ce261e13c120616ae0a857f01626fc18cb867258. 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/QM3DF2246427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b59e77f9bb958da930c59149426fb277522365ede177343f2cc89f66425e819. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QM3DF2296152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef23cb38d3771d4e7d5f20f2343bfcbb4f78c19d6cdcecc41e5e37f1914ee13. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMANG2202709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09af6db9a8a88fb322924c7384d94ecad845d334959231b1dd5dbf84f816cb1. 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/QM3DF2292525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d09082d4d83488a7bcf0e2becc4ea3e3b099557acec25afb8867704b08f480. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMANG2236140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26724bccbca3ce1e18da3fe38574700a7521a1b7e09237233f1c2b48bba244a. 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/QMANG2251249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2155dffc4cfbe2b5d0be12d66909578dea2805a57f4fc00a6df63932c1284e69. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/US3DF2460979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc95dbb2c46012594ed77aeed2d09d8ea62d091877f3af3db94dfe9068f867. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2419058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51e80c0a5638a3c8b5b64194cca68c08e6d9d170528436288d8e6d826a6e03f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USANG2419427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9c42a8eb69c22d044a3e7ab27dc17d282b8b6732a536978ef6269465dd0d8. 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/USANG2405840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e60181a3ad92037d3598907980b251d5cdf8bf5e22a71a27636c50a1b9c7fd. 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/USANG2405841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470e212ca1128ee70ea1572c002856b69dcc64f345c0d621ab103cce482918bb. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USANG2418136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389844789667fcb73af542e30a90ae5fc86724e06325808befa3207b1bdd3605. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US3DF2524456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ca5edfb492914b670d9863ec8423a4604244de93efa082a2a481d08f9b04ad. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US3DF2574341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84ec3ad8d673ed699a5eaa763060f83e97f6271946fc8c4846cb8593716d983. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US3DF2567973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d864c0a6bf2c28d954e586f9d79a1ead5d4fd6877b65c20900616de80af14. 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/USANG2518201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097bc4ddee6ac9376a467f168609c273f534097aa513af85450d6fd08dd1dae1. 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/USANG2522766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a622f5ce4b9436211805d9006a41da209f80b79e05e175c2e8253dd39da7e2. 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/USANG2522767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d11c848284b0afb45e69307cc615eadaf413588d0dc575a904cd8e64f75d26. 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/USANG2522768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b05dfb400b60c6104c9e235adb811322c2aa68873c80f1485bceb86c77773. 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/USANG2522769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeec5c84ca2861de20b902446e3ea5afe1c51a4b20122c312223c89f13fb5438. 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/USANG2535184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f61341fd58e7c1cc5277bfcd7197ad31d2ac07854756feebc518cbf6563a8. 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/QM3DF2280733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf3a4b00a3a65d731746ac8a1e47b783fa97afbcb1d867a43bc0a396c47036f. 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/QM3DF2141563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894f342d98d6ac8d3e466fb545a01b6f1f86456f23554b64d9d7e984d77faee. 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/USANG2407772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5f68acec1fe05c553ba1c4854b6e5ac76ebe2c40a6148cfae4d877b19aab85. 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/USANG2432011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3148e85eb10b7c374575a3873673f4eac73df377d79d7889b2ac4eb9afbf5a. 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/USANG2498809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f61341fd58e7c1cc5277bfcd7197ad31d2ac07854756feebc518cbf6563a8. 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/QM3DF2280733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea89213d81d75144552779b52f1ac4d4e5c389ec0576ca5ee2603bdbafa642c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEH742443055.