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 0xc8ea10c7112d6c4b478f4536fdc9b4a5900dc425b1f79d9b2c926209b05741c4. 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/2e92281c-f72c-4a76-902c-5456ab9882f2.json and https://artists.proofprofile.net/proofs/artist/2e92281c-f72c-4a76-902c-5456ab9882f2.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 0x25ae95020d58985e76010769ebb7b296723578e578b553b4e5dcedf59330b23c. 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/QMDA72140709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd89350ea53a1722574f1b12c873be5680ebce1c9b4e5c015e67ffa251e13051. 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/DEUE12395624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d6bd8df3c327edbc0a5ca8c932ea9b45580f8b82f992d5aa5e6f8f14be4d9f. 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/GBKQU2369867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61937341082d8152227bf4c951089adacb01885bf03b3d90bc2be44be2f0d8cd. 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/NLT2H2200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaae02ca4c24f9a1f9380e0b2c8396cc7377219f4b8128f5f9209997346b963c. 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/GBLV62310741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76450dc4ff298cc37948724f6eed2f139423330a2aaf252df6fa2335791cf797. 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/GX3HH2484066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d55e6c5bd042341352e7e2e344e434000ab2512d7d9c5791f243a57581375a. 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/DEH742405776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec579407acb2ae37f5a6c86bbe5135e13c8511243bd9f9d988e0888c6eb3ec0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2301052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fd1ab4d1a3ea9a8a9a90d76bc32d1d3b72045a609a21b9af6bc65970a67ed9. 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/NLT2H2301053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419a76b8b185adc13527d46bc44e8dd1857cc139a2116053063f2f761c84b9cf. 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/NLT2H2301054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6653ce7517ff063a876c6dc6d2963515681e22f62334daab409e0cd484adbfa5. 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/NLT2H2301055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8be317189bca5b7468faafba144e2ef27510a7f30f382ffc9a27a158fccf65. 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/QZS7J2374208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f091c8230057c094301f96a4ac07135c4dbf3bc2fff596f44879314a178a0c. 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/QZS7J2351046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e81367fdc184af89415c2a48df17f8f35c0c03813508621a14ed663053d1ac2. 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/QZNWR2348285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee92fa92035ccb45a787d8c7e7c0f392c030053d7eeb3520e4a736bac0d5ded5. 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/NLT2H2300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5331d08ea6da30a13201bf86859f7f4b62b44bc2ec8d4938ffc939eeabb3109c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2348793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b0324c59409266fd57685f7eec1e291389536561811645dfe031f75735637a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DE1F22300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6bc50435e7844929128a980fe706d0a4f3057a52bc706728193f376db1b15b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ede9b2b78502880593226c63c2cc87539d105ef6bd15948385ac6c57c24449. 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/GBLV62202852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31939348b2f208ac9ade930a2c4b28835b3eacbc159e90f1e58fd4f75ad00604. 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/QMBZ92266299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35772926314d1b15c4242c5a683f4da93b03f8e67adf60d06199fe56e316cac4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P42222203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7141fb50ee117fa9962f4a671b565fbd1f143c3442e5d9621f80631f0c5df6d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2272815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17ff594b3c675770b2f079354b13558662f7e3078b0c54ed69ef8fbcf416831. 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/NLE712200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7fdb2210d8bd48712d8388edc989e7996693b440ec6fe3dcbfd282a37a94f6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:56Z), 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/NLE712200405.
KIDS (feat. Emily Roberts) [nowifi Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523c993d37ebc78ab24a6593573ef0ccd0bb851c1be4e971a756d2073c196f9a. 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/USA2P2150477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8df8152f06aa5c5b1cc0b9aa71c9b78db2608cf39852a4817c19036bcee24c. 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/QMDA62185239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac83e0d96ea12e7ce2508b751b626032878cac218071ba42259abbb7618a46c. 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/NLT2H2100770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510cd75f37b0eb1b64a848cb9b246d480a688b7564227354e8826ab9523c8713. 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/QMFMF2109666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9276cee79be280cf567f65d9949266a08712de803769c14611b4a37751284c43. 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/DEXO62062332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f23e752d581c007de8fcbd0c9c51fced1305c7b4617e36e2c3fca0833f61dd. 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/NLT2H2100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83291d4f48b80eb8b9c0802e38c9d81c7a413c28cb25d0b6ee4d1ac0515e105. 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/NLT2H2100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35e39d541bb92710905bd559931789a6f69f3170f8b2cae926ff3a82ed52fd. 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/NLT2H2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc27239365e6f3388e6ad1c39f396c5a3c1419a12bdd671cb3731cf676020caa. 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/NLT2H2000381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbd82b69b72e8c8ba4e8763ea5ad45ce11bac5609a040b0728153db721d99df. 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/DEYT72000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b09cb7f35b366378437fd65bd3655bdd42e7ed6763145582535ad302b63e20. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf259d90e89eabf581e3614fe716be2526dadc0124cdb357135b5c0794a561d. 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/DEYT72000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaf6a7d8ae11d6cb182682de43b29c99aade316cae2eee87ab34e3dba42a049. 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/DEAX12000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0548d446fcf6e3592072c83c4ea78424994c3f11ff7b58201ceb2c3afd7b97. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEAX12000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ec6b95c5f16a02cec07d67bb21878d6dae119ebe8988ebc8b337a9664c1e90. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEAX12000044.