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 0xbc9925e13e53d4ac4ca6efbc6566239ad0a98365922bc77ce83a629e81423f28. 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/90166b6e-cf78-43b6-8a1f-042473d81ea8.json and https://artists.proofprofile.net/proofs/artist/90166b6e-cf78-43b6-8a1f-042473d81ea8.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 0x16e38730b1f7905e96909514cddc98740f08e7dac7515bf1f5e30c85471674b7. 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/4vpLSrS5KA9okRlGfgukIv.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/4vpLSrS5KA9okRlGfgukIv.
{"copyright_id":"0x6075dcb68ba7e7d64a131d69fe493243a256386ffb5c95b0a93f856f58624dbb","isrc":"PLB382400416","name":"MUSZĘ SIĘ WYSZUMIEĆ","registered_at":"2026-06-05T17:44:37Z","spotify_id":"0AJsRqHxb8keXe2bJVYGqq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6075dcb68ba7e7d64a131d69fe493243a256386ffb5c95b0a93f856f58624dbb. 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/0AJsRqHxb8keXe2bJVYGqq.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/0AJsRqHxb8keXe2bJVYGqq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829e0258d8eaa6f83906f97950726b3cd4f39324149b5ce9f4e599f816d5c4b5. 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/6Iugziv2neplWImJIuvUx7.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/6Iugziv2neplWImJIuvUx7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa208b944b35d91470463f1161c6f189be822a71b31b33f748a0112593122da8d. 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/4srf3nyTraQfjgvOZktD6z.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/4srf3nyTraQfjgvOZktD6z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a64faa06f0428504d14a0b8266ae76de55fd06fce46a8d76404d0c0bdab1c9. 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/27XoyL0jnqG5kDPUPWuV0N.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/27XoyL0jnqG5kDPUPWuV0N.
{"copyright_id":"0x17e70f75fad2e33ba5dd3856252edfce35c96354a6147061eb3984a5b7815b3a","isrc":"PLB382400088","name":"NIE BIERZ TEGO DO SIEBIE","registered_at":"2026-06-05T20:21:13Z","spotify_id":"5doATNidl1m85wvnaNdhD3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e70f75fad2e33ba5dd3856252edfce35c96354a6147061eb3984a5b7815b3a. 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/5doATNidl1m85wvnaNdhD3.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/5doATNidl1m85wvnaNdhD3.
{"copyright_id":"0x3074919049a01bf42cb6cb2702e4045acd2601ba2f80a780de123d2bb4544bb7","isrc":"PLB382400418","name":"Z MIASTA KOMINÓW I SMOGU","registered_at":"2026-06-06T18:41:19Z","spotify_id":"4C2ZwneHuIYSes8pwOGuUT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3074919049a01bf42cb6cb2702e4045acd2601ba2f80a780de123d2bb4544bb7. 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/4C2ZwneHuIYSes8pwOGuUT.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/4C2ZwneHuIYSes8pwOGuUT.
{"copyright_id":"0x1669e692302cc258b067538d79d22e9a1302edefce15f3d9486b18e2aea121e7","isrc":"PLB382400425","name":"NIE CHCĘ WIĘCEJ MIŁOŚCI FREESTYLE","registered_at":"2026-06-07T08:45:33Z","spotify_id":"23EOUmlR8yLTFqFKLln3KT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1669e692302cc258b067538d79d22e9a1302edefce15f3d9486b18e2aea121e7. 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/23EOUmlR8yLTFqFKLln3KT.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/23EOUmlR8yLTFqFKLln3KT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3fb485433f49d678c42b78821547e1051ef4f50c05ae8dee0beabdf2e07610. 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/6iLNISxuTkh6FilXOxADko.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/6iLNISxuTkh6FilXOxADko.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61594aeac34b7137a1e8a6931e9358d3612587c5cc98639fa43250a2765b238c. 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/0FCYnumk56YsDnEU6ZbTqR.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/0FCYnumk56YsDnEU6ZbTqR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb401603f0fa6d785ec66c41ad095de6e5253659446b51fec61e0cc4734e5d300. 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/19YF6YaJW3V3uLn9bPlt6b.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/19YF6YaJW3V3uLn9bPlt6b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa48be0bf911f8ff64b2746146fc026525ca91c509e07429201d752ab5f8e3. 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/5iH46MGR6vmR6HsPb4t7xs.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/5iH46MGR6vmR6HsPb4t7xs.
{"copyright_id":"0x732a8b43b2bd206220b95d7af9138eae3fcbf58ff555f0c405e75bc918c2f70f","isrc":"PLB382400420","name":"TO DLA CIEBIE","registered_at":"2026-06-07T14:49:18Z","spotify_id":"2u2HmCXFIBbWG4dDuh3Vzj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732a8b43b2bd206220b95d7af9138eae3fcbf58ff555f0c405e75bc918c2f70f. 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/2u2HmCXFIBbWG4dDuh3Vzj.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/2u2HmCXFIBbWG4dDuh3Vzj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4f67dd4f6062dcf67996c05843a5ad0b50953a5f6d79a3179191a557d2885b. 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/70KvYF4K13vjF2eA1adn17.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/70KvYF4K13vjF2eA1adn17.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574b00d819920ec05144e15efe4fb5d27e5726351f8413051cd6e8543136bb73. 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/7JZ1S8IYXhrzph0faEWsXz.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/7JZ1S8IYXhrzph0faEWsXz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03b3443d1ae5e2e8af571d81b684c140912f04d6e86d52cd059cecbc9601c2. 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/7wUV52Ippy6UN9k1ZuWGZe.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/7wUV52Ippy6UN9k1ZuWGZe.
{"copyright_id":"0x396cf5a6eeaac8b345472cda9fa32c43760d543c6acb9bb35982297bcafcf89f","isrc":"PLB382400424","name":"DZIWKA NIE JEST SZCZERA","registered_at":"2026-06-08T04:56:40Z","spotify_id":"13EKVNgZQ2khR94xjQ6sNh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396cf5a6eeaac8b345472cda9fa32c43760d543c6acb9bb35982297bcafcf89f. 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/13EKVNgZQ2khR94xjQ6sNh.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/13EKVNgZQ2khR94xjQ6sNh.
{"copyright_id":"0x27c56d4ffd8f3db52ab9587a6d29bd5da70b694cf27f556b2cfe1deebec26db5","isrc":"PLB382400428","name":"CHRZEŚCIJAŃSKI TRAP","registered_at":"2026-06-07T21:31:34Z","spotify_id":"4fxb5CRpefitLaEnzV1aWF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c56d4ffd8f3db52ab9587a6d29bd5da70b694cf27f556b2cfe1deebec26db5. 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/4fxb5CRpefitLaEnzV1aWF.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/4fxb5CRpefitLaEnzV1aWF.
{"copyright_id":"0xd19255c3f2fdfeedfd315ded72e280f71892653d684a25c140c273e5be24fbcf","isrc":"PLB382300215","name":"BIAŁE SZALEŃSTWO","registered_at":"2026-06-07T21:30:33Z","spotify_id":"6h2UPaOyeeaOfZG8WeyP3d","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19255c3f2fdfeedfd315ded72e280f71892653d684a25c140c273e5be24fbcf. 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/6h2UPaOyeeaOfZG8WeyP3d.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/6h2UPaOyeeaOfZG8WeyP3d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49d7ac9a8832614637aa6b82e9ec9170ecd3839ec98d9e46278079891e44cb2. 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/1BqHBqkSu0WXt75oR43vEa.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/1BqHBqkSu0WXt75oR43vEa.