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 0xf6ce60fcae95c999c06d3e7f7dc4ec9ce2cbe3ec21b759fa615051da3467e51e. 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/21e09b7e-bc6f-4784-b1bc-1aae76a0e9a5.json and https://artists.proofprofile.net/proofs/artist/21e09b7e-bc6f-4784-b1bc-1aae76a0e9a5.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 0x9d5dff4fded94b3ab1fa8fc7b7a4bf487bf5f8afe20270154d4f548ca6d15b2e. 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/QZNWZ2034935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994f4fe387adf19c75636510b4633d9647a44553f03c1a14b53f1d90340a6803. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPLR2086985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457dd5a772fdd80c96e5bdc17c5fc9738a670723ba9019ba598a0811588250cd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:04:47Z), 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/QZPLS2020014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd62bfea4c301fa536d89ed4d81d8043159ca0189f14e3501353d97fd9a30e4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFZ62146452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69adb654688828298c627129f9703ea3713b325eaf1ef29141e6e2f381fdb16b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:52Z), 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/QZFZ62146450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b720a2ad7dc6c17517ae9deafdabb4d23a87b7b3892dbaef22e894c6e0414dc. 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/QZHN52132573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3057ec1c0142e5cf8367d63c17b69faceaa87965f0ae8192f18546d914260818. 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/QZHN52130811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa907d55e9417521cd88cfb92e8cc87ec5394ca747b6c86368dfffd492a7bda47. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHN52132592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bb396f3395b087c42eb11469117153b5a6e4ce5a29a8f2a19d26cd0a267bd0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZHN52132579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b8817a8deb8a98d511a2fc9f7540ff6e80a7622d84e39c9ee807e43470faf. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:33:53Z), 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/QZHNB2152799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a7a9ff39d654599c23a49b0ab2611e15ab62596e8431e57274a697dcedb88. 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/QZK6K2194879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf339d59523e7da35a6ff7e1b253e4e14c02f1c8666048c953cdb75fe7f5dc7e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6K2192805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c3e0478a223665023af2321f309d8267686252ed8cf694bfc9d38925205bc8. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:29Z), 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/QZK6K2194871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39715d503d6b6afc68df49ca5379a626ba95142712842f0c1751a21bc6424e8. 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/QZK6K2194878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f52ede17b7f539188d0d70a7031018ca4db5f1e7e11c1d986ae092e173b6483. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWW2178736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc03595f4aa3e44fed99fbb447150583ac50708798ea2739d22b83c27244bf53. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFZ62250895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b9691f526bd6b38833a6d983c1edaaec81885e6a7495cedabfc5a05c67ce05. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN72223032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbd53ff13c85585f600b2a1fb2179c90ed388539f346356164930ca0a37ab22. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:34:18Z), 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/QZHN62249901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fd4a539fc831cf6c9b360aad89314bb7fdd0110c1c85da1b63a7367f5cb762. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:34:35Z), 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/QZK6H2256962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c182a19d6bd714fc7221836bb84a355ae6cca776f9545bea2929b4c22bd9c76. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:26Z), 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/QZK6H2256961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0847bc00d10ae7dcf16fc80617d8dba8b7f7f69c0d8091ab612ee67e06ad3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:34Z), 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/QZK6H2256973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc09eca3e9d8ef36b7fc753bdba03801636352902106c70c3d7a24282e4cad7e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6H2256960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ed20597853701f1cc766c5595a638b69392c42a84fa52dc50b9be6f7a7a4ab. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6H2256261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f19f72d42ce71e7eea1bf24a4ffc165ccc7570cafd43b285a6fde60f59e5d33. 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/QZK6G2210101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7681d2c0c6c3e0aca77bf8d20f12282ea07898ba896402a18b791b116ffe184f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:42Z), 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/QZTB32290594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5d70d49a935700182d16f8420d854a82fe58870e7e4a144bc37230f91a9ef. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:48Z), 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/QZTB32293771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b7df176cc625328e3ab6d651c9437deec04ea157096340b131800b417b12f2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDA72376490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde1d2eead22b501376c5e267b7dfeab6d64a1fd5876b0df88f55b4175c6f704. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA72377818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8176d8f2a61c531ca7779aae5af15ab33b06dcf8f1104c49a991ca1ac97bffa. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:44Z), 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/QZHNB2353344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71ea53c3be0fe639c1d40bcd0c6478e05187b7b099de21d53f345e278aadd1. 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/QZHNB2353345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2876ede39d1d5333b7db021bb66e4b54acb6e4e4197cbc291caf965384dd638. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNB2353346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc8fad494cfd1b1ab2a585c24928c3f004ff48eecba84152784c3e6a57b5d13. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHNB2353347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623672c9c3c2c4d2920c0d2fb041dcb9c64c2c0aae5963d4e8350c9ff251ad46. 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/QZTAU2390378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bf2f2ae4d685f2b7897d849ca8cee7af1755174b8198dcc10c7cd3a655a096. 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/QZTAZ2325644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88faea1783bb82efdfe53c76310dba9e936f34f87178ba024d060468cbc598e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB52304494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcbb3bfec77adb66541f2b1b5e9430e31eef94964510d64678cc99951e6544e. 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/QZTBD2392001.