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 0x7600ae2f815d1a8fc1a2633face8542877a65aa57cbbe1494ddaf87ba78d6080. 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/df6b7876-bd22-411e-81d9-650d8ebb6d1c.json and https://artists.proofprofile.net/proofs/artist/df6b7876-bd22-411e-81d9-650d8ebb6d1c.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 0x8bf41e8f0610b8d841df15da93fd4564d396cd015c3768f32978f098ace179ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4HdkLeMDlTGyV5xuYTJfB6.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/4HdkLeMDlTGyV5xuYTJfB6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7747d5a02f4cb1689794781549ff9c53af114750db5f698c770c904910fa9a5. 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/6XQ3PBgh7Hpg9xQ2rErIOH.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/6XQ3PBgh7Hpg9xQ2rErIOH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf41e8f0610b8d841df15da93fd4564d396cd015c3768f32978f098ace179ea. 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/6cf4vzb6HA5S2rIAsMlKnD.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/6cf4vzb6HA5S2rIAsMlKnD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f30bcb4506e9fc218d349ca03f8dfdbe3551b2e6484ba0396c2b3c34a018b. 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/5LdZMgPXWZ5iENV4Xcvgjf.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/5LdZMgPXWZ5iENV4Xcvgjf.
{"copyright_id":"0xe02c3396258dbaf42df600b7e364f9b0a88ae8f3fa1dce74eae0e16e846d7029","isrc":"PL88L2100003","name":"Rach pach ciach","registered_at":"2026-06-18T03:47:42Z","spotify_id":"2GddtPhutbwtqwD4xE0DN6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02c3396258dbaf42df600b7e364f9b0a88ae8f3fa1dce74eae0e16e846d7029. 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/2GddtPhutbwtqwD4xE0DN6.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/2GddtPhutbwtqwD4xE0DN6.
{"copyright_id":"0xcdeeb651a11db8d6447a9a1db721dd006aefb2a595005d32b3edb8e445f26ccd","isrc":"PL88L2100010","name":"Powiedz padre","registered_at":"2026-06-21T07:21:12Z","spotify_id":"1NuQCokk822b6qcgFXgPKY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeeb651a11db8d6447a9a1db721dd006aefb2a595005d32b3edb8e445f26ccd. 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/1NuQCokk822b6qcgFXgPKY.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/1NuQCokk822b6qcgFXgPKY.
Kiedyś to wróci (feat. Solka, Praktis, KPSN)
{"copyright_id":"0x575d16ed7506c6c661e2ab31417e01e57f0fbb8dbee6be2ec3db315444b3cb6e","isrc":"PL88L2100011","name":"Kiedyś to wróci (feat. Solka, Praktis, KPSN)","registered_at":"2026-06-27T10:05:14Z","spotify_id":"2mpSTq5NWZfZnHbXUxX2kI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d16ed7506c6c661e2ab31417e01e57f0fbb8dbee6be2ec3db315444b3cb6e. 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/2mpSTq5NWZfZnHbXUxX2kI.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/2mpSTq5NWZfZnHbXUxX2kI.
Cutastrofa (feat. Dj Flip, DJ Kebs, DJ Krug, DJ Tort, DJ B, DJ Who?List, Dj Twister & Falcon1)
{"copyright_id":"0xc756089e902f459b511ab6f9a9febdda7f71083d9d7d4369525f5f22082362c7","isrc":"PLC071505016","name":"Cutastrofa (feat. Dj Flip, DJ Kebs, DJ Krug, DJ Tort, DJ B, DJ Who?List, Dj Twister & Falcon1)","registered_at":"2026-06-27T03:37:51Z","spotify_id":"5e3rlu28tqM6KXGezQ3HNf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc756089e902f459b511ab6f9a9febdda7f71083d9d7d4369525f5f22082362c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5e3rlu28tqM6KXGezQ3HNf.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/5e3rlu28tqM6KXGezQ3HNf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7747d5a02f4cb1689794781549ff9c53af114750db5f698c770c904910fa9a5. 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/3nxZGp8f3y3JQD4wr91qF1.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/3nxZGp8f3y3JQD4wr91qF1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc2f44e790b1b3df8330be1ba4cb5d15443ce5d98734405daf6de958445fe97. 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/3AuAnoEcvZl3Jc7wi1pxnN.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/3AuAnoEcvZl3Jc7wi1pxnN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c427253fc20685c216e1f9938dae8f152177f42ed48824dcfe96a969c41cd3. 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/66SJtBXmawj9Dc9JETIwkv.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/66SJtBXmawj9Dc9JETIwkv.
To Wydarzyło Się Naprawdę Oprócz Tego, Co Zmyśliłem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aac4cee537c9592ee823431a9b3ab843fbe6aaa16ae0e82aac40343fb5f455. 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/450DGgWLhy8AaTQBRSipsL.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/450DGgWLhy8AaTQBRSipsL.
To Wydarzyło Się Naprawdę Oprócz Tego, Co Zmyśliłem (DELUXE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aac4cee537c9592ee823431a9b3ab843fbe6aaa16ae0e82aac40343fb5f455. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4U1kBFCLcaWRGq1Pso6Uzv.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/4U1kBFCLcaWRGq1Pso6Uzv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b22042a588c28f6575677774e71168a136d597f58a9aa6b6960815c8a66849f. 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/7F4G7AXTe0b768HeUfR33v.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/7F4G7AXTe0b768HeUfR33v.
{"copyright_id":"0xebc2f44e790b1b3df8330be1ba4cb5d15443ce5d98734405daf6de958445fe97","isrc":"PLI292200498","name":"Jak Bocian","registered_at":"2026-06-09T19:37:18Z","spotify_id":"3EcBGLFMqByGvrNHiURkQt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc2f44e790b1b3df8330be1ba4cb5d15443ce5d98734405daf6de958445fe97. 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/3EcBGLFMqByGvrNHiURkQt.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/3EcBGLFMqByGvrNHiURkQt.