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 0x5b8b1f6291e04b1c3be08e0f11d50e4612b4e81f8ebdea6fc79f495a3e0de8ca. 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/e953badf-bb51-40e5-982f-eba9db91b1e8.json and https://artists.proofprofile.net/proofs/artist/e953badf-bb51-40e5-982f-eba9db91b1e8.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 0x9cbea725a75e5b09d523b5c71db4d94b512c1f797ca06df6e3278f62a40db8b7. 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/FR9Z62100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe970321de1adadca5c2c5f774a8e4956acf0f9a0a4b31e13e3cc2861df37d8a. 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/FR9Z62100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f33afbf40fcc2a932b20d45c43ae82adb1d6ea00e02ed00202be58abab46afb. 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/FR9Z62100582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b9655c9b176f8f8f47112d108a6c7d14216238ba2a5ce3c9335b755407d00. 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/FR9Z62100584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0c3c2eb28f0a94c3b9a58644fd6d84feb06991073e97507009208dff2d342f. 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/FR9Z62100585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb67fca5ba535b229365f9df78a8d9404e029f181bfb110fa1f3cac277df39. 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/FR9Z62100587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd934c59bf577b2be1314d681efae94fd9823fb22e49cf464eb05999190dbbea7. 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/FR9Z62100589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b6f291c1a6430ee11791860021315477cbabcff56037bd77fe512a9e601732. 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/FR9Z62100592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cb6da2a68b8907c7ad3c8e185a662c3d73547e7bcf3548f2893e8edb80898b. 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/FR9Z62100595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8055a658c5199742442d54c1500376e332a7a5ba6809ecd976d6ac8278c655ce. 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/FR9Z62100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407d8da00cfec0c6ac8c64b10ce1db44dba706d4856671b34b05b4a4413a7b5b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9Z61900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d6b59c933a0176583cfb024057a7ba22436df9eaf256b10e21ad14c552f34e. 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/FR9Z61900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b40f8529d911b59f4d8187ea83f3aa3b8a363bd40ed0db829eccd3f3794ccd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR9Z61900054.
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 0x593abd7a563f021d635b8d5f3f64a06fe084a118f051fc79cfda0aa957819679. 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/FR9Z62100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6615cecfa424efa2ab48ccd9b0299d33796f07e65474cd017c23a3b0b12bc4. 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/FR9Z62100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34d0c6ca55a13f136e44445a337f13149550376851a501a767322afbd06aee9. 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/FR9Z62100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9480ade18675197d8d035388d661d8a264186109926ef80aba09d9a6622fb6cf. 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/FR9Z62100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6354e7ead6cb0745a0a8779e6d86b7459fa3381ae3aebb005476ec95c7b89b98. 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/FR9Z62100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb291a5692bff81deb3f220ee6970e3149553f2ab436350b25c565cfe1674669. 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/FR9Z62100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d43b30997dd78b607d9bf397ec7540ed83f21c35e52fc590bfbb13b834cfc7. 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/FR9Z62100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d9523c68d5691035925858facb5dc5e2fa5f2a4a8f808ea8619559e378278f. 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/FR9Z62100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0715ccec0f4d781cada08a9d5538d20bedc8412d860d5883d46069a3b6921. 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/FR9Z62400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e248fc8800baf3f0c870755bc4dd1f0dccd4682dd3932445d814c34ae09af2a. 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/FR9Z62400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9285df40e12ff59365f9ebf50dc934af07c3c5e1165089899ded6e47f569b68a. 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/FR9Z62400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da48ede851352af286f41ada22a5c8b407ff86bb6131dc3a839dbf7bc2e92b. 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/FR9Z62400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f1644c0bec66a4dca09fcc899babb64a7afbc8d92e8a3d5938ab3b3ee2165. 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/FR9Z62400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0cc98eac98c7e816341faf13fe17451a739221ca61d18cbf48cd86387362df. 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/FR9Z62400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a69dd22276f5b7e50951ee9b0b960fa86b3c9a0fb5b04883eea50f3cc9515ab. 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/FR9Z62400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966721c34ab43e4792fc3fc662af3e78924002d36ef4ca6a51c8e6ba077b4d0c. 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/FR9Z62400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2082f0ca7ce6c2a23f4a15d73384b75d6d33f373fb106c0fd55b569567eee0b4. 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/FR9Z62100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7d8d97d8147607006f63a3f5b3da8f20d41d39d6fe06205503005632f59e0e. 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/FR9Z61900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cb96d969e321570d4ffe9e90e3d8e2b4d8fc4bfba215fd8d8e1ae23a19970d. 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/FR9Z62000487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca715b8e8ecb3d4751f794b6c3212cf8138731101469b59c1ba0ea2ae1dfaed. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR9Z61900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ed95a2a5f18994ce7328482e08076abb9e579f4a5585a41ba9256555b1032. 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/FR9Z62000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db72e3624702d2504cfbcdeeaa4a9e3db71c48c3682e10ac61123ab99c87f62. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR9Z62000491.