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 0xe7bcd7bc6dee89955ae6c518f221d3e211d3c70a4bbd809d9041461f76abc66c. 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/f4d3fccb-8bed-4a79-8dc3-5a506c720925.json and https://artists.proofprofile.net/proofs/artist/f4d3fccb-8bed-4a79-8dc3-5a506c720925.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 0x9234ff051c89bc1a2125b741247040edb5b23465d45911b1e72af29ef63c9e54. 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/7kIH6hRbe3fIGKyW3iRXzS.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/7kIH6hRbe3fIGKyW3iRXzS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d357922af7d4e35f1c06d1e59885bee98dc67fa046eed34b231d70564db674. 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/3DNePkWF14n3TGFAEJtgo5.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/3DNePkWF14n3TGFAEJtgo5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd40f5a6f0a5cc8e3353f9fbbf99f399d52c4db7538407530eb45fc8e4469634. 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/3UMaFrfdGR5zq2cR6Nu9tZ.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/3UMaFrfdGR5zq2cR6Nu9tZ.
{"copyright_id":"0x175156f134db438bd6c262945548cf62c6a14c40ffda93ad72e54418bf612fc9","isrc":"PLI369553310","name":"JUBILER KACHA & MŁODY KLAKSON - REMIX","registered_at":"2026-06-08T13:27:15Z","spotify_id":"53uzFfLWBxBx7NWdbQ35Bo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175156f134db438bd6c262945548cf62c6a14c40ffda93ad72e54418bf612fc9. 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/53uzFfLWBxBx7NWdbQ35Bo.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/53uzFfLWBxBx7NWdbQ35Bo.
{"copyright_id":"0x562a19aafdc6af2ef3ee338a9f04375bd5662f96739ba96afd37fad373bc96be","isrc":"PLI369553280","name":"HANNAH BARBERA","registered_at":"2026-06-07T08:32:12Z","spotify_id":"4Vs78BBvv9Wz3NYGQG1oIB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562a19aafdc6af2ef3ee338a9f04375bd5662f96739ba96afd37fad373bc96be. 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/4Vs78BBvv9Wz3NYGQG1oIB.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/4Vs78BBvv9Wz3NYGQG1oIB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a320852d3b53b06015e6399ca83fc9a87ac3edb38eb0ad5616d1e480a311841. 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/3SCeiXyYHNTmArOIMm5QUj.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/3SCeiXyYHNTmArOIMm5QUj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e52845d634c263d01590cf5b75de72102ae4ebf545f08b0bebff5252290472. 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/6M33JoWcfVtPegAN8EFx0C.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/6M33JoWcfVtPegAN8EFx0C.
{"copyright_id":"0x288ce54381a45db85dd62bd614e6b260e64bd35dd9d53132169fe5f20dedec1e","isrc":"PLI369553320","name":"HUNNID BANDZ / HESOPOLO","registered_at":"2026-06-08T21:52:49Z","spotify_id":"1X1zTzXEAwAOwyPP7shjhJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288ce54381a45db85dd62bd614e6b260e64bd35dd9d53132169fe5f20dedec1e. 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/1X1zTzXEAwAOwyPP7shjhJ.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/1X1zTzXEAwAOwyPP7shjhJ.
{"copyright_id":"0x9175a6ba1164cfee3149c98cc4b4ca88e05663d1a8e7ca17dde88865d864eb60","isrc":"PLI369553340","name":"HESOYAM! REMIX! COUPE!","registered_at":"2026-06-10T19:42:00Z","spotify_id":"0cAM4PfwkeGpblE6doYw6f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175a6ba1164cfee3149c98cc4b4ca88e05663d1a8e7ca17dde88865d864eb60. 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/0cAM4PfwkeGpblE6doYw6f.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/0cAM4PfwkeGpblE6doYw6f.
{"copyright_id":"0x87d983200e6bda6a21df8b1a6e657fae889074546b5f924268a9dbf5c21587a8","isrc":"PLI369553360","name":"KOCHAM WSZYSTKIE MOJE EX","registered_at":"2026-06-07T02:12:36Z","spotify_id":"0UMuivIgbGn12zcu7JZAQJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d983200e6bda6a21df8b1a6e657fae889074546b5f924268a9dbf5c21587a8. 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/0UMuivIgbGn12zcu7JZAQJ.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/0UMuivIgbGn12zcu7JZAQJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8675a966499670b3d45fd0f5265ea15ee20bd1d985c4ce3f38083307ccb71511. 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/4J2y3QlbrYsiz0qygAviL2.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/4J2y3QlbrYsiz0qygAviL2.
{"copyright_id":"0x356c0c7a2b1b4f9b10fe79f1c28b365e3fc7acf839eba94099f6576cbe0ada4a","isrc":"PLI369553330","name":"HYDROKSYZYNA (OUTRO)","registered_at":"2026-06-08T13:35:46Z","spotify_id":"3GaY43i8RY3wEt4MDpAp84","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356c0c7a2b1b4f9b10fe79f1c28b365e3fc7acf839eba94099f6576cbe0ada4a. 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/3GaY43i8RY3wEt4MDpAp84.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/3GaY43i8RY3wEt4MDpAp84.
{"copyright_id":"0x339f36ff3597e41f09594ed0e759dba124ade52fcf01378ad9eac9266a28b125","isrc":"PLI369553380","name":"SIKE! NIE MA TAKIEJ OPCJI! - REMIX","registered_at":"2026-06-09T09:30:54Z","spotify_id":"1ksRX9vnG5yOy8rXYW1dYA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339f36ff3597e41f09594ed0e759dba124ade52fcf01378ad9eac9266a28b125. 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/1ksRX9vnG5yOy8rXYW1dYA.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/1ksRX9vnG5yOy8rXYW1dYA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f12a6e33d527975dbd129b2950acaea7e359ecd54938d3400a9c58144844141. 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/3yNVXasve7twKVfHHhH18G.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/3yNVXasve7twKVfHHhH18G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5e9f9d9132789d1c0db4e3973e391fe00d7ac7c887981fc8d53155bcaf132. 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/1iPFnAws8XFzd4cBrTJK3D.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/1iPFnAws8XFzd4cBrTJK3D.
{"copyright_id":"0x77cde7c7b2c77e2b0b0fa28f30dbe14ba35dd4de957e03d3606f305c18f689b0","isrc":"PLI369059900","name":"Ambicja Hustlera","registered_at":"2026-06-10T08:23:40Z","spotify_id":"4EWeoLcnqX7gJGE6fvQwA1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cde7c7b2c77e2b0b0fa28f30dbe14ba35dd4de957e03d3606f305c18f689b0. 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/4EWeoLcnqX7gJGE6fvQwA1.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/4EWeoLcnqX7gJGE6fvQwA1.
{"copyright_id":"0x078ca1f400358bac3b6ca70aa5dadade9ef31929f5da2b801d168d5742a3551b","isrc":"PLI369059950","name":"ANIOŁ ANTARESA","registered_at":"2026-06-22T10:44:54Z","spotify_id":"2QQrUiPoUkCrODfBHTQdSD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ca1f400358bac3b6ca70aa5dadade9ef31929f5da2b801d168d5742a3551b. 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/2QQrUiPoUkCrODfBHTQdSD.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/2QQrUiPoUkCrODfBHTQdSD.
{"copyright_id":"0x37986fa9b7cda0517b6910d7d7b17a4cbbce6e8f45625f81ce552aece44ff3c6","isrc":"PLI369059960","name":"Digital Swag","registered_at":"2026-06-23T17:48:27Z","spotify_id":"1vWNEAOvFbAr4UvBM423Wr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37986fa9b7cda0517b6910d7d7b17a4cbbce6e8f45625f81ce552aece44ff3c6. 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/1vWNEAOvFbAr4UvBM423Wr.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/1vWNEAOvFbAr4UvBM423Wr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a73845089b196f1bb7c5769f808f0980db15338e21d83382619db6ef0b6a1d. 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/1o5VQHnVhDkRZ0SBkfInBH.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/1o5VQHnVhDkRZ0SBkfInBH.
{"copyright_id":"0xb62cce491ace5ddf796c00923396f088a6a46105c81d587b1f854ec8d0c6ded5","isrc":"PLI362967320","name":"Zawsze to miałem","registered_at":"2026-06-18T06:56:28Z","spotify_id":"3NKWy8LF9LaINi6fSvLaVz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62cce491ace5ddf796c00923396f088a6a46105c81d587b1f854ec8d0c6ded5. 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/3NKWy8LF9LaINi6fSvLaVz.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/3NKWy8LF9LaINi6fSvLaVz.