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 0xf86d73eb79e80fb7fc95842b9db3e27c86129a073aac2ccf713e9eacbde4699c. 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/1f918def-7ad5-49dc-b131-99c547350049.json and https://artists.proofprofile.net/proofs/artist/1f918def-7ad5-49dc-b131-99c547350049.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 0x5ada6a9f2f9f168cf2e0bea8c5bef0605d82d6cc78ccaf112d5af62fbf8866e4. 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/4NyIRtMv7VlOhGNdbUIPgM.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/4NyIRtMv7VlOhGNdbUIPgM.
{"copyright_id":"0x87393de4d66ac9a9c2a0b6a4f8a7a10258440675f311ae6b0a53a4db921a4a0d","isrc":"PLV401900557","name":"Jaki chciałem być","registered_at":"2026-06-08T13:36:20Z","spotify_id":"7JzZZbx8RGkmORpbaXCQGq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87393de4d66ac9a9c2a0b6a4f8a7a10258440675f311ae6b0a53a4db921a4a0d. 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/7JzZZbx8RGkmORpbaXCQGq.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/7JzZZbx8RGkmORpbaXCQGq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5084300789402d054f064b3975b94006a03782700191c6865e86f4cf241d1c. 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/54erRLpQCv1ABYViB89yza.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/54erRLpQCv1ABYViB89yza.
JEEEBAĆ ŁAKÓW REMIX (feat. Otsochodzi, Te-Tris, Włodi, Tymek, Wac Toja, Teabe, Mosad, Fokus, Abel, JNR, Dwa Sławy & Gedz)
{"copyright_id":"0x6776218b8ac2a1f518b79ed8135f56da547df0d876b47855ab09834465b8b2f3","isrc":"PLH341300511","name":"JEEEBAĆ ŁAKÓW REMIX (feat. Otsochodzi, Te-Tris, Włodi, Tymek, Wac Toja, Teabe, Mosad, Fokus, Abel, JNR, Dwa Sławy & Gedz)","registered_at":"2026-06-27T03:40:47Z","spotify_id":"0XxSsvZ7A8PPVoL8GdOX7f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6776218b8ac2a1f518b79ed8135f56da547df0d876b47855ab09834465b8b2f3. 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/0XxSsvZ7A8PPVoL8GdOX7f.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/0XxSsvZ7A8PPVoL8GdOX7f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246883188bea59e9da16a092e8102c9350a9e89d4166cf02ced5d701aedae3b8. 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/7wxRBpXmcHnNh1APKYcUtq.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/7wxRBpXmcHnNh1APKYcUtq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d26f5c49805976267e5d626e3111042bf1f5d5a494d03714c876b2bc016f2f. 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/501ps9CoD9lLmgvpwm9Rha.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/501ps9CoD9lLmgvpwm9Rha.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab5b11a82a03bc339c20eb35225214571265fe5afe13655d11b52a68497bd7a. 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/3MHZycRwOa04RDgpik5Uan.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/3MHZycRwOa04RDgpik5Uan.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab5b11a82a03bc339c20eb35225214571265fe5afe13655d11b52a68497bd7a. 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/7tVYpOfvSjCj8yQ3MRmRDm.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/7tVYpOfvSjCj8yQ3MRmRDm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815f16c70aadca4ab6ac76a9a69ec9560892e92fada18de94159b2a18a10b6de. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1EWOCkMgZ4eb8VOI365TiY.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/1EWOCkMgZ4eb8VOI365TiY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc9986b689efdf0668cab59889575a314c04e8a790e7b41c71b1702f2604526. 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/3yfWDricCIW4if2iig0bqA.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/3yfWDricCIW4if2iig0bqA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc9986b689efdf0668cab59889575a314c04e8a790e7b41c71b1702f2604526. 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/79wrSyS99N8EYrMjf4KOyk.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/79wrSyS99N8EYrMjf4KOyk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e25e9905c1a700d4ef57761223395dc898476d524f88ea7e7088b1dfba1137. 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/1YCgD357tcgqVJq05MEZyx.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/1YCgD357tcgqVJq05MEZyx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd84c93856cbe8d22ebb4b3fe2e9ba9358ae6b9eea6e8afd8dc0579665459b9. 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/6qqgOOWxWJealjTHCkMPeM.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/6qqgOOWxWJealjTHCkMPeM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc5a0b94d1c094ef039e579b1e11f8538491eef40c4ee55e152d7263353efd6. 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/2OxrsXbZjmNXxvPTZYKytE.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/2OxrsXbZjmNXxvPTZYKytE.
{"copyright_id":"0xd3e4c995dab583fab734fe0b7dc9c7681da5b9b2361abd6124150e9658ae0b0c","isrc":"PLC061807453","name":"Język ciała","registered_at":"2026-06-01T18:29:23Z","spotify_id":"4mW3jXs0vwWVAXzrkWXx2Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4c995dab583fab734fe0b7dc9c7681da5b9b2361abd6124150e9658ae0b0c. 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/4mW3jXs0vwWVAXzrkWXx2Y.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/4mW3jXs0vwWVAXzrkWXx2Y.
{"copyright_id":"0xde85ae76844ba6a94b7b64eb5888c301b555d86bc67327eabbab47cd5aedefc2","isrc":"PLC061907512","name":"Z ziemi włoskiej do Polski","registered_at":"2026-06-06T05:30:07Z","spotify_id":"1v8PUoBDtaRkVtvb0XbMIc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde85ae76844ba6a94b7b64eb5888c301b555d86bc67327eabbab47cd5aedefc2. 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/1v8PUoBDtaRkVtvb0XbMIc.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/1v8PUoBDtaRkVtvb0XbMIc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e25e9905c1a700d4ef57761223395dc898476d524f88ea7e7088b1dfba1137. 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/3XPsMxnGimzypspj1ZgxN9.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/3XPsMxnGimzypspj1ZgxN9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca77c15ba7b3bc9b0410eff35c6c3e586b97ce5a262bcfb408363626be24eb9. 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/6FgWHM8bSZuPASrBVszZwC.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/6FgWHM8bSZuPASrBVszZwC.
{"copyright_id":"0xf766fbb2c4e2af2ca1d35fcbf14e0eb71d0736e60e949e5e39aefd4286ff20ed","isrc":"PLC061807457","name":"Poza kontrolą","registered_at":"2026-06-02T02:33:04Z","spotify_id":"2KpCXX2rQUYgoaEXsxEG6H","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf766fbb2c4e2af2ca1d35fcbf14e0eb71d0736e60e949e5e39aefd4286ff20ed. 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/2KpCXX2rQUYgoaEXsxEG6H.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/2KpCXX2rQUYgoaEXsxEG6H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aa6950409b5d2ecc4565614a62b2a3ed0adfea5c4ef770bc54fa9b8ef71e3b. 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/7xOopojOXP0mQb2y33HZf4.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/7xOopojOXP0mQb2y33HZf4.