1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa03e6911009ace6974cca7a9b4ff394b97bd209a5b24eef3b3c520a332d6faf9. 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/7b925e49-e5d7-475e-a361-b84a1bb69f2a.json and https://artists.proofprofile.net/proofs/artist/7b925e49-e5d7-475e-a361-b84a1bb69f2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558c607b7288f2d7e5dc8598f2b56678e28647403233eef58eae2c9ad6bc97d6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4z88WWtBj5P5CSUBfbFEB5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4z88WWtBj5P5CSUBfbFEB5.
{"copyright_id":"0x59091a895066671f6b257be30fd5eaae1636eb628a83b326919eb7f6df6ea33b","isrc":"USC4R0714414","name":"You Keep Lifting Me Higher","registered_at":"2026-06-11T04:09:15Z","spotify_id":"7tk7mtdm18sxDtal0Ew5DY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59091a895066671f6b257be30fd5eaae1636eb628a83b326919eb7f6df6ea33b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7tk7mtdm18sxDtal0Ew5DY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7tk7mtdm18sxDtal0Ew5DY.
{"copyright_id":"0xa2831847f1b1ba336f3e26fe7c91a3f3b50aef3d3286d948643f86a5afe7d3e4","isrc":"USC4R0714415","name":"Pop's Cool Groove","registered_at":"2026-06-04T08:58:35Z","spotify_id":"1ABAAlwDD1HW3pGCA7ReUJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2831847f1b1ba336f3e26fe7c91a3f3b50aef3d3286d948643f86a5afe7d3e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ABAAlwDD1HW3pGCA7ReUJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ABAAlwDD1HW3pGCA7ReUJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb839ab12d8074329f8259ab03952698680178412a996a7dcd9243ba080edb8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2S7XYSL5qyBoJVQqm2mogJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2S7XYSL5qyBoJVQqm2mogJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dbba239dd7c996fa8afb6dd9d0879d86a9c54e96a0ba094307b27ef2276d5c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/79CjLTIHR1flpPdC5ri0PU.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/79CjLTIHR1flpPdC5ri0PU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14796c7a80e6f7497dec1b9e6b6733f26165f1512152efb04935c87218fd2ebd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1x4x9f6frm9yHEX8JCONnv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1x4x9f6frm9yHEX8JCONnv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338a21e567bc0f387e9e734291a8072cd398bfab8882deb5108bd0b7e822fb56. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ZKdcqyDje4i0PtjCrPkrf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ZKdcqyDje4i0PtjCrPkrf.
{"copyright_id":"0xfa7f4ce048b5669ef81ca2ebbec8930d0390ee11092ca87a9603cf69db594909","isrc":"USC4R0714420","name":"Every Little Thing","registered_at":"2026-06-23T01:04:32Z","spotify_id":"5U3wE3cekLIw8m1ENvlJEk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7f4ce048b5669ef81ca2ebbec8930d0390ee11092ca87a9603cf69db594909. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5U3wE3cekLIw8m1ENvlJEk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5U3wE3cekLIw8m1ENvlJEk.
{"copyright_id":"0xac529a38afc43b203c513b802b59a390877fedc6d17d78c8662fba062f718b1f","isrc":"USC4R0714421","name":"A Quiet Place","registered_at":"2026-06-05T11:30:17Z","spotify_id":"1OPul4djgqzViAUdGMHJof","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac529a38afc43b203c513b802b59a390877fedc6d17d78c8662fba062f718b1f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1OPul4djgqzViAUdGMHJof.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1OPul4djgqzViAUdGMHJof.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afe237084b0748e3ba77e0da6f5cc65eda387c1e56c5d4109ae922963e84b3a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3C4ZxKHgb81vTvH4JVPNQc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3C4ZxKHgb81vTvH4JVPNQc.
Hot Buttered Jazz - Celebrating The Genius of Isaac Hayes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e66fd795543cfb4e3926d9ac6b4b37304379dfff2e749fa06e107913fd295c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3iIwQqJtm55FlirvHa89PO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3iIwQqJtm55FlirvHa89PO.
Still Thinking About You (feat. Norman Brown & Lenny Castro))
The Ultimate Collection Of Sensuous Smooth Jazz Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4524f428076ba79c2011e737be0c727d250127f092c984640dde45c27ce809c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HP9BzCT4HmYUmFcQhv96I.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6HP9BzCT4HmYUmFcQhv96I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb4590a67bc6a8b02bde895655463355ae077c66f8909afd60231c1e688d8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4QCLC4WSJMXjZ17QhkWl3f.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4QCLC4WSJMXjZ17QhkWl3f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb733c472a900213b64c9ca905e8d98283c5360afbad0f3ab5632a5c4c672f7a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5H6VCCvafjEQWIrnui0wOd.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5H6VCCvafjEQWIrnui0wOd.
{"copyright_id":"0x4e77ad9b9516bdb3185836a3f3bf2194baa5c341415d9466b3828ffeacacfefd","isrc":"UST2Y2000166","name":"Mo Jazzin' (feat. Norman Brown)","registered_at":"2026-06-10T20:03:42Z","spotify_id":"7bI1pUHDjEoqSZHm6JyaDZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e77ad9b9516bdb3185836a3f3bf2194baa5c341415d9466b3828ffeacacfefd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7bI1pUHDjEoqSZHm6JyaDZ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7bI1pUHDjEoqSZHm6JyaDZ.