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 0x0ce063296a8d968a8f0e7f7a9b4356cc0c8d0fe21740338d23d8fe8ae976e640. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21a62a92-74b4-4c93-ac6f-0ff3a21bb500.json and https://artists.proofprofile.net/proofs/artist/21a62a92-74b4-4c93-ac6f-0ff3a21bb500.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe81c00ab6db496d556ec1adfb181d020d383c2ae15bbd249a17d45bae1c0177a","isrc":"AUMEV2378408","name":"Children Of The Forest","registered_at":"2026-06-07T09:47:57Z","spotify_id":"2kBSQlHn0e8W2Pi2tslmQ9","type":"track"}
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 0xe81c00ab6db496d556ec1adfb181d020d383c2ae15bbd249a17d45bae1c0177a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2kBSQlHn0e8W2Pi2tslmQ9.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/2kBSQlHn0e8W2Pi2tslmQ9.
{"copyright_id":"0x0627cb9c065217945ece3e077c3c3d579864ec08e95da0a368badd4fe4c53e38","isrc":"AUMEV2378409","name":"Shimmering Gazes","registered_at":"2026-06-08T06:12:23Z","spotify_id":"4DetN0Dx6sXPRgEACjcsKt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627cb9c065217945ece3e077c3c3d579864ec08e95da0a368badd4fe4c53e38. 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/4DetN0Dx6sXPRgEACjcsKt.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/4DetN0Dx6sXPRgEACjcsKt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281a244f7317a6893114c9ffae88b48d93b5c59bc4c7619ff4e92d9830b2fb0. 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/6rxCu3OInqlWRBAUuqhRwu.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/6rxCu3OInqlWRBAUuqhRwu.
{"copyright_id":"0x4811ed6abefedc022eedc8ffd214f271fa91f9fc03983d5acf4b74d5e1e37c41","isrc":"AUMEV2378412","name":"Coming To Terms","registered_at":"2026-06-07T03:54:35Z","spotify_id":"1jynTX5L9khnU7b1ll2NiJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4811ed6abefedc022eedc8ffd214f271fa91f9fc03983d5acf4b74d5e1e37c41. 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/1jynTX5L9khnU7b1ll2NiJ.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/1jynTX5L9khnU7b1ll2NiJ.
{"copyright_id":"0xe5cfb289000c942238b6749127569c40ccbf4128cd862f87a875f2fae3cad700","isrc":"AUGBT2301976","name":"Stellar Rain","registered_at":"2026-06-24T23:10:24Z","spotify_id":"6hXLKgUduOBYTGUgLLSmyO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cfb289000c942238b6749127569c40ccbf4128cd862f87a875f2fae3cad700. 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/6hXLKgUduOBYTGUgLLSmyO.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/6hXLKgUduOBYTGUgLLSmyO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a4ba4298d726ef11a02b01fcaf1c3864c0bf4d4cd51dc7553b03a32a852be. 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/20ff95hnPIjciqaVsPlBMv.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/20ff95hnPIjciqaVsPlBMv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0384f432f79979911c39ad4515d889cb54d72617a6be639860b036d0e294b792. 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/5KFP52FZpbaYL9i9msxJ0A.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/5KFP52FZpbaYL9i9msxJ0A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3ae24385fc856cc248c8c42413b844f35c7f65ef1a77990be2809cc59767fe. 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/2I5lkeH5bXWnlJPUCU6VAp.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/2I5lkeH5bXWnlJPUCU6VAp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beea08e273f6b20914ff0c1777f1497ac6dce0e8688283e530bf86d6a33025a. 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/688AGkb1alo5mzPWGM8sU3.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/688AGkb1alo5mzPWGM8sU3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bce60da6b18678dd471e8ffd02d5cc6e521a4589f843c3561b7da35bbcfaeb. 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/55vKE4H72iPp1vVIMN5OCC.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/55vKE4H72iPp1vVIMN5OCC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732801667c77cde5faa1ed224262b19c03e4e214da8a134f5d032d9a6d8b28b7. 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/04oeAThIOOmKqR3HztYqJT.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/04oeAThIOOmKqR3HztYqJT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643143c96c3161c48688db9042d52d6600caa888ffe15688475fed25f609adfd. 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/7LrfvjA2jLyaZkGFMWjB9x.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/7LrfvjA2jLyaZkGFMWjB9x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a22d0260df801cb3213853e359f3ed79556cad642560de30b961082a32bc1f6. 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/1WyBUd3x2izGJpWXO3OAV5.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/1WyBUd3x2izGJpWXO3OAV5.
{"copyright_id":"0xc8bcce0a894ae305516ac9c8554d1b3544fb86d9385e828d7ec228eb2d1c5b3f","isrc":"AUGBT2301986","name":"Ocean Bliss (Sound Ceremony)","registered_at":"2026-06-23T17:16:27Z","spotify_id":"5IHn1pMLOVioGruwXxYGZs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bcce0a894ae305516ac9c8554d1b3544fb86d9385e828d7ec228eb2d1c5b3f. 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/5IHn1pMLOVioGruwXxYGZs.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/5IHn1pMLOVioGruwXxYGZs.
{"copyright_id":"0x7ccef9a3b12fb2d3dd2ba1532cd4867ea4e8db8e60202cec397c97385445afa1","isrc":"AUGBT2301987","name":"Hymn Against Fear","registered_at":"2026-06-20T13:13:36Z","spotify_id":"1OFOOXpUpFMUYS0Onp8eao","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccef9a3b12fb2d3dd2ba1532cd4867ea4e8db8e60202cec397c97385445afa1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1OFOOXpUpFMUYS0Onp8eao.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/1OFOOXpUpFMUYS0Onp8eao.
{"copyright_id":"0x650b03ead427dfba066c5715f7465162423d365f10be550066f56927819dc4e3","isrc":"AUGBT2301988","name":"Curiosity (Soundjourney)","registered_at":"2026-06-23T17:16:46Z","spotify_id":"0w0rhHxUEvWdSIqFkwQKrR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b03ead427dfba066c5715f7465162423d365f10be550066f56927819dc4e3. 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/0w0rhHxUEvWdSIqFkwQKrR.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/0w0rhHxUEvWdSIqFkwQKrR.
{"copyright_id":"0xa32bd8ba4408da53f5590ce4dace4f3324ab4633c59b0345f17a551cfc095787","isrc":"AUGBT2301990","name":"Captains Lullaby","registered_at":"2026-06-21T11:19:22Z","spotify_id":"43cRaAwDfx4oIfk4dXFukE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32bd8ba4408da53f5590ce4dace4f3324ab4633c59b0345f17a551cfc095787. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/43cRaAwDfx4oIfk4dXFukE.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/43cRaAwDfx4oIfk4dXFukE.
{"copyright_id":"0x09361e4c1ce9541fab8cc935c3e8901b1dbf75941fcb7edd04b776aaf2523660","isrc":"AUGBT2301991","name":"Back And Forth","registered_at":"2026-06-27T18:13:46Z","spotify_id":"2gtJFjQRUNWLbrFbukNEvT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09361e4c1ce9541fab8cc935c3e8901b1dbf75941fcb7edd04b776aaf2523660. 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/2gtJFjQRUNWLbrFbukNEvT.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/2gtJFjQRUNWLbrFbukNEvT.
{"copyright_id":"0x56d9402331fa23d2d6ccfa93d2ce0aa1e49801145c6fb28997b59bccb8af4629","isrc":"AUGBT2301992","name":"An Invitation","registered_at":"2026-06-27T18:12:11Z","spotify_id":"0bI9s5jMNyhYscz8siS5rr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9402331fa23d2d6ccfa93d2ce0aa1e49801145c6fb28997b59bccb8af4629. 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/0bI9s5jMNyhYscz8siS5rr.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/0bI9s5jMNyhYscz8siS5rr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815fff06ec5c83c487ba1a8a4d60bd7bf356cc51b8249e93872bb4974a04b2a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/28b9zoIsmsW062IiyIiPNz.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/28b9zoIsmsW062IiyIiPNz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73228e6a95c2766d72f6f7b260986e00d885214d7d1db5e0b2cb8f64da35869c. 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/3atYFif62wxa3DolSuQlZz.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/3atYFif62wxa3DolSuQlZz.