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 0x5ee1f41b13caf07833fc9cd7e56e9ca904a1f02753f38aae87e05eae506cc60b. 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/f7bb5f61-7608-4b70-b1f6-adcfcad1fda2.json and https://artists.proofprofile.net/proofs/artist/f7bb5f61-7608-4b70-b1f6-adcfcad1fda2.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 0x1b4ea898df10076a067de250588a22f47cef6a9e6975f28a5d6ea24e56bc76d7. 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/GB8KE2400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71305434961118494854b3912e467a76b388f2f5d4da6d889dcc5319a7f38f34. 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/GB8KE2410119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b76d329ddb634be9a723c0e9f2e212f48348fd55a3d108be2dc75fc98c812e. 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/GB8KE1957995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4463b87e3f2ba0c5560b9d68331db65fe315ffe8955ba76d2c9ac38fb5894b. 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/GB8KE2410117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a67ffc27fccf6fd6479c72e714cbc24aa0da0886e3b9415100e4bcaf3bf3b. 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/QZHNB2425057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53105453fe9aff1574eb6cb2448313201c19e3f880764161162811daa6897c88. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GB8KE2404582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a20638e25ee2378b32c2a2344b7540662a25127d6c3d3a44e34ab2e154875. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZHNA2468066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900099525bdfe9f90fd2656754c4ebcaef259d3dc0325e93f7bc8315a7cefd1. 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/GB8KE2407774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fc64b268fb8c3f6ca8138a5381ee71bdcff66477a7c2867f1d66a6f74aa3eb. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GB8KE2320059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1810f62672d0fb8b4597260d189fa0c5de5f90b5ca31824d141c7fa89eedd61. 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/GB8KE2320060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7c51cbf0d1a91a8fac2975e2df4879e1f4af6b90a5567dbc11e02a3798d96e. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/GB8KE2320062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5495538379596bbc5ce19841119f26d7a39427f1ebc246de2d8ce2ca165ff. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/GB8KE2309076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8068beec6d82af4d05bf1bfb8cbec8f45c3bba2cc190682b9a92234d25f94479. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GB8KE2309077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1817aa8e861206e67d12e1d747c12062c1c70b6ea390adefe9c583f4e0f7317. 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/NLCK42228147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172cf34e401ebff818a9642002b9be9297cb447e57f72a615ad41748254ee807. 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/NLCK42228150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f86cd038931ffd5e33d748c0290c39d5afb198567d02f22f1a367762b2d88b5. 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/GBRD52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f474ae19fad57a2211d9f9a181b810d64335bbd32dee99a4939114a49eae94. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBRD52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daf29cdd579b950df94874d142beb229ddc661b40a90760b029a17418968641. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GB8KE2215697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a7b1ffd228eae86702f06e246c8989bc9fe393aa17d24df7a7ed4f02cfa9b8. 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/GB8KE2215698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ff528e08ebda3f6ad12d39826105efc2c8514ddd7d84f2cf40eaa99b1081db. 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/GB8KE2209864.
JTR & Quantix - Run - Master Error Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187ec13e4926f1096ded4b6022d2ce54edb303e63dce4b4b0015a21b48545fab. 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/GB8KE2209161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481d9a9fd30b6bc08d0dce3d871bd7c7567be5b26a5156682eca68f5b9af85a. 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/GB8KE2206121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e632eca99d530aba209025e048fc5ed8f0fd90a342428a697f9269eb6b966b. 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/GBZ4D2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c44389dd1e644d00694416b2c9e7e5532a31f7db46ad0f0fa168c2a7c5b81dd. 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/GBRD52200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4291065a8c8eb0df3565251f1ef1db1429056fa6b31da0f9e0906651f359a258. 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/GBRD52200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd033cc57798e01f111381b161018faefb088a38f8966667b203da201ebdae3. 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/GBZ4D2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25f7bd4c681bc8a59edf2118733f57829a59154c74d2cb23de29d7de2bb5f85. 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/GBZ4D2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad145f2d336f9303e26653e4a614a2bc0b6abb6de8efc7fc55af163ccc8c0bb2. 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/GBZ4D2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4298680af9708d9a155c810d7ecb5b82681c034da5e0551a063c9fe8ee90dc. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GB8KE2150576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350b5ea27a2e2af65312a9d3a4178097e78c931fdfa25cad38d17ed44cc3f86. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GB8KE2150411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b123d26a32b7a55e41b88889f850e35725d1385fce6bbd38cdc2a4df6cf20. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBZ4D2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11354de3cfb7abd7da4db65bc110c736fff344d5b8a30de048f0b09fa9bae685. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEYOK2012844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60f42b06b50e925663d27d6ef7886f1cfc0af6cd811891bc272845a52b40878. 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/GBRD52300445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3584b86b654f97ecda2ce8e9ca3310feb1aec11b0430b28216b71b30cba39d9. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GB8KE2313725.