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 0x9cbcbd8858c24213f9bda1ce4362db17a68d86b68081538a7b97c8ac76c85c49. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c531533e-76e0-4b50-8e6f-ecf4132dcbaa.json and https://artists.proofprofile.net/proofs/artist/c531533e-76e0-4b50-8e6f-ecf4132dcbaa.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 0x8dca1c86597a3ce70f115f13749d22c7172dbe944aa0c0e695bfed36233598d9. 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/3zyz6ZzmeeCYY6s355jSsk.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/3zyz6ZzmeeCYY6s355jSsk.
{"copyright_id":"0xb7bbefec37e5c96c4f0af2835989f40539ffc5912690cc8c3b28fa42826d5894","isrc":"USDY42362608","name":"Silence (Remix)","registered_at":"2026-06-22T17:38:32Z","spotify_id":"4ZnhRzx9mkJYTcMuctbLrB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bbefec37e5c96c4f0af2835989f40539ffc5912690cc8c3b28fa42826d5894. 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/4ZnhRzx9mkJYTcMuctbLrB.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/4ZnhRzx9mkJYTcMuctbLrB.
{"copyright_id":"0x31e936a5cd036a0857eae10612ac3c33bfe290d684bc8b902d5c2448ba3e0158","isrc":"USDY42362613","name":"The Shadows Caress (Remix)","registered_at":"2026-06-22T17:40:09Z","spotify_id":"03wuqiISQOzwBqEXVWgOab","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e936a5cd036a0857eae10612ac3c33bfe290d684bc8b902d5c2448ba3e0158. 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/03wuqiISQOzwBqEXVWgOab.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/03wuqiISQOzwBqEXVWgOab.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46223ef0030e829b69772702daedc74484296a607ec2da0eee9c49972a618737. 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/5loRMuSBcEwKzEL8zhf81r.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/5loRMuSBcEwKzEL8zhf81r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8865ec683c722534e9b84dd0163f659b7e24a6e8c2848474ff7617603839815c. 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/4iLfBgi59v5Kl51bMv9Uxr.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/4iLfBgi59v5Kl51bMv9Uxr.
{"copyright_id":"0xc8a4ea2f510fdf20cb8f2250422c22f204d9e37dc3496d232f6751d0a7ec6a1b","isrc":"USDY42362619","name":"Origin Enigma (Remix) [Bonus Track]","registered_at":"2026-06-28T04:26:56Z","spotify_id":"1bs6KdGvht8ihSswivvP1l","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a4ea2f510fdf20cb8f2250422c22f204d9e37dc3496d232f6751d0a7ec6a1b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1bs6KdGvht8ihSswivvP1l.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/1bs6KdGvht8ihSswivvP1l.
{"copyright_id":"0x6f54b73a1d6dc3c50e07264daa28c39fdcf7b0fb3fd275988df595ed06c88a46","isrc":"USCGJ2142378","name":"Die Well, Brother!","registered_at":"2026-06-21T16:42:55Z","spotify_id":"2jyXmsr3fp788FvMzcDUsG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f54b73a1d6dc3c50e07264daa28c39fdcf7b0fb3fd275988df595ed06c88a46. 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/2jyXmsr3fp788FvMzcDUsG.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/2jyXmsr3fp788FvMzcDUsG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8d3be1e9fa363d719da959a9eb55ed2f8a3b98fcac56e20e30b4ce52c07ab4. 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/4KGwXOXbtl7dz7jX6U5l0s.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/4KGwXOXbtl7dz7jX6U5l0s.
{"copyright_id":"0x0751b75d89f7db58b31ab9b7c3db97669c2e12a924b9dcb8e2dec1969387e48b","isrc":"USCGJ1901107","name":"All for You","registered_at":"2026-06-28T04:26:58Z","spotify_id":"5RpFlUrkBuY7R62bLlPTgu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0751b75d89f7db58b31ab9b7c3db97669c2e12a924b9dcb8e2dec1969387e48b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5RpFlUrkBuY7R62bLlPTgu.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/5RpFlUrkBuY7R62bLlPTgu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2378bc7d27b202ca46df008f7cd6d5dbb41b38f4dff3c66102f7df949199bda8. 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/6lH9nl7NZKp0KyjUr6WK24.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/6lH9nl7NZKp0KyjUr6WK24.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77760523bb2794b610c0201c909f05d30d01e4b7dfe009e1f194dd5474c4d98b. 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/72C3PiTJi6uFfcvgCjqCjW.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/72C3PiTJi6uFfcvgCjqCjW.
{"copyright_id":"0x5ffc33390f6de0f31458b19adfe816d3c581bcb5ac7d280e9647ecb2db222c69","isrc":"USCGH1417618","name":"Can You Hear Me?","registered_at":"2026-06-06T15:06:49Z","spotify_id":"60JtXYR6ySTazGLhNjFWX1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc33390f6de0f31458b19adfe816d3c581bcb5ac7d280e9647ecb2db222c69. 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/60JtXYR6ySTazGLhNjFWX1.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/60JtXYR6ySTazGLhNjFWX1.
{"copyright_id":"0x893e3c99c4b71773ee800ecc378950f20afce8d7101e31e7554e2ce25fc141a3","isrc":"USCGH1417619","name":"Shatter the Myth","registered_at":"2026-06-07T05:27:44Z","spotify_id":"4OHg3EbUGbqsPjPrneUOwE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893e3c99c4b71773ee800ecc378950f20afce8d7101e31e7554e2ce25fc141a3. 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/4OHg3EbUGbqsPjPrneUOwE.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/4OHg3EbUGbqsPjPrneUOwE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256791998eac9629983c078528541545685c0145389c3146a8aa34a52ed8028e. 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/1sLIl7Eap2eTNXJky5ftO8.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/1sLIl7Eap2eTNXJky5ftO8.
{"copyright_id":"0xe77eb810df012ec304a9cdf38b59d4213dc0e53051e8832edb133e200848fc08","isrc":"USCGH1417621","name":"With a Childs Smile","registered_at":"2026-06-09T03:42:32Z","spotify_id":"0sxPAzHtCqMytzjC0mANjd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77eb810df012ec304a9cdf38b59d4213dc0e53051e8832edb133e200848fc08. 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/0sxPAzHtCqMytzjC0mANjd.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/0sxPAzHtCqMytzjC0mANjd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e2433e43f4b302944b096edd3006eb01983a27dff34ece9416313d4262caf1. 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/4TL6zZ0OvEKe5HHKjrC0G4.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/4TL6zZ0OvEKe5HHKjrC0G4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291149f9a52bdf4f8edb143fc2660aa69bdd70b01e70cb3fb624912857e5b879. 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/1VLGW015rQebk5d6M1KkUV.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/1VLGW015rQebk5d6M1KkUV.
{"copyright_id":"0x4a744bd69cd74551f32fa1dde5f4babf5b0d85ad7dda1313b3f0c770dbe5249d","isrc":"USCGH1417624","name":"The Gift","registered_at":"2026-06-18T10:31:59Z","spotify_id":"5crkvupgHdF57hsui4yqK2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a744bd69cd74551f32fa1dde5f4babf5b0d85ad7dda1313b3f0c770dbe5249d. 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/5crkvupgHdF57hsui4yqK2.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/5crkvupgHdF57hsui4yqK2.
{"copyright_id":"0x61d303a1f4ad0fcf7cad91d66fc8fa90465beb4da8a390e25941214f5df73aca","isrc":"USCGH1417625","name":"Hunter's Pride","registered_at":"2026-06-18T10:32:11Z","spotify_id":"20qQGecpcMPEfMHTDOGUMh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d303a1f4ad0fcf7cad91d66fc8fa90465beb4da8a390e25941214f5df73aca. 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/20qQGecpcMPEfMHTDOGUMh.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/20qQGecpcMPEfMHTDOGUMh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d7089ac7fd60799b9940607e8d5e25ae2b6935eef549f7f40636e54f77115d. 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/2B4KfXkQndxb9nOggFJMel.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/2B4KfXkQndxb9nOggFJMel.
{"copyright_id":"0xf1dae8f24eefcc2d3d20ec8a0d34a8267ec3df42156f3ea5a5fded446a5da94e","isrc":"USCGH1253288","name":"Judas Lie","registered_at":"2026-06-28T04:27:24Z","spotify_id":"2pOdoxGT2CA8I04d2Ef0fC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dae8f24eefcc2d3d20ec8a0d34a8267ec3df42156f3ea5a5fded446a5da94e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2pOdoxGT2CA8I04d2Ef0fC.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/2pOdoxGT2CA8I04d2Ef0fC.
{"copyright_id":"0xa124fc7dce41c6b814fafa0bfc8bbce5eac6d465bb19907ca4ee4654f5c9ae10","isrc":"USCGH1253290","name":"Always Remember","registered_at":"2026-06-28T04:27:50Z","spotify_id":"49wqOXU99x6AnDojcN45UG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa124fc7dce41c6b814fafa0bfc8bbce5eac6d465bb19907ca4ee4654f5c9ae10. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/49wqOXU99x6AnDojcN45UG.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/49wqOXU99x6AnDojcN45UG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25444e1e2a25330588c90c67f289ad7120a3534ced951713109b8f7a78785560. 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/66Jr0BrSBAZxsu5OkeHDiB.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/66Jr0BrSBAZxsu5OkeHDiB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d53a620996243185adfc22c73e197bd2b2ee7b935d64a12177150eafcc312e. 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/25FJkElk3OtQOdv6x5Ans1.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/25FJkElk3OtQOdv6x5Ans1.
{"copyright_id":"0xfae53cc03ae392035361288f3c9b24d84e3ff10dbcdaf2acf1d20afb2998a8c4","isrc":"USCGH1253295","name":"The Final Call","registered_at":"2026-06-26T16:28:10Z","spotify_id":"49aGlBgZm2uiGZAK5Ld0P9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae53cc03ae392035361288f3c9b24d84e3ff10dbcdaf2acf1d20afb2998a8c4. 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/49aGlBgZm2uiGZAK5Ld0P9.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/49aGlBgZm2uiGZAK5Ld0P9.