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 0xefbb1f546a531c96f32bb3460ab29b78c08928c00317a830d18e515f68ad4311. 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/adeaf7a9-24e5-4109-9ed7-38cf8615195d.json and https://artists.proofprofile.net/proofs/artist/adeaf7a9-24e5-4109-9ed7-38cf8615195d.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 0x9eb374e0f31ad705c6d0e59bb54fd40058e843f64598a0a5a674a82c6ea000eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4rKgglMTWD9srdmmFd3iwS.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/4rKgglMTWD9srdmmFd3iwS.
{"copyright_id":"0xe4310f8507bc7fdaa47efce3dc286b643bec3d9206b767f87f645afb11ecf85f","isrc":"BEMB82300002","name":"Blijf Nog Even Hier","registered_at":"2026-06-07T22:40:42Z","spotify_id":"2F2qeRzJ9YbP6u1b9P4G4C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4310f8507bc7fdaa47efce3dc286b643bec3d9206b767f87f645afb11ecf85f. 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/2F2qeRzJ9YbP6u1b9P4G4C.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/2F2qeRzJ9YbP6u1b9P4G4C.
Blijf Nog Even Hier - Live Pukkelpop '23
{"copyright_id":"0xb7d6dcc653874dddb145fafeeb0690f7761f187d99905a56db3c67b95ea79713","isrc":"BEMB82300007","name":"Blijf Nog Even Hier - Akoestisch","registered_at":"2026-06-23T18:05:08Z","spotify_id":"2Oarvucd7xwEtYEiuYNqcG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d6dcc653874dddb145fafeeb0690f7761f187d99905a56db3c67b95ea79713. 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/2Oarvucd7xwEtYEiuYNqcG.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/2Oarvucd7xwEtYEiuYNqcG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5646c2c620257e91da9b96bce0489d5384da3c1710436f217a688c5b6860ca8b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3pWn13u4Tdb8Mgxfm2TrHM.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/3pWn13u4Tdb8Mgxfm2TrHM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb502b3895755f1f4949308ebd102d5ac535d80bbc9081f7a7fa1627c6ad312. 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/5dMJ0Q15Ra0pFguXjo17mC.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/5dMJ0Q15Ra0pFguXjo17mC.
{"copyright_id":"0xb95c137a4fc7e2bbe8be76846bb67476580b64191e5dae6bbab4f23ecaa5508d","isrc":"BEMB82500019","name":"1 Dans","registered_at":"2026-06-05T10:06:56Z","spotify_id":"2kO7seuAYgbVWVvVzLZSP3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95c137a4fc7e2bbe8be76846bb67476580b64191e5dae6bbab4f23ecaa5508d. 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/2kO7seuAYgbVWVvVzLZSP3.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/2kO7seuAYgbVWVvVzLZSP3.
{"copyright_id":"0x9022779b8bc8bf4f16d21420f7b7e71bfeae426cb643a5049469e9e5f3d36758","isrc":"BEMB82400012","name":"Kleine Jongens","registered_at":"2026-06-10T22:39:44Z","spotify_id":"3EzmRuWvnpIukBgehlEC7V","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9022779b8bc8bf4f16d21420f7b7e71bfeae426cb643a5049469e9e5f3d36758. 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/3EzmRuWvnpIukBgehlEC7V.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/3EzmRuWvnpIukBgehlEC7V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5646c2c620257e91da9b96bce0489d5384da3c1710436f217a688c5b6860ca8b. 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/30UpKzTfByak5LfAcnGnWO.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/30UpKzTfByak5LfAcnGnWO.
{"copyright_id":"0xb0cd317b907fa771b10c7bbb43ce32d4d10f7c8a50dc50c64042996674910a90","isrc":"BEMB82500020","name":"Was Ik Maar Een Vrouw","registered_at":"2026-06-19T18:46:25Z","spotify_id":"5RUYVsqAK6pnpljJtp0kk6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cd317b907fa771b10c7bbb43ce32d4d10f7c8a50dc50c64042996674910a90. 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/5RUYVsqAK6pnpljJtp0kk6.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/5RUYVsqAK6pnpljJtp0kk6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d5f0fb7cc9d4a8de5e1733a42bc6be90340b62b89eacd32097e324d2a314f. 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/5LjxfeP0zO6MRPv9Z8X4l7.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/5LjxfeP0zO6MRPv9Z8X4l7.
{"copyright_id":"0xa4d945de4bf1e9fd310be6f9fda1aab5806582bb96e9610bb9263b3cba22b2ee","isrc":"BEMB82500022","name":"Zo Moe","registered_at":"2026-06-10T22:39:22Z","spotify_id":"3TKCRqh5QuTbpA4cLzSbZK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d945de4bf1e9fd310be6f9fda1aab5806582bb96e9610bb9263b3cba22b2ee. 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/3TKCRqh5QuTbpA4cLzSbZK.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/3TKCRqh5QuTbpA4cLzSbZK.
{"copyright_id":"0xe4310f8507bc7fdaa47efce3dc286b643bec3d9206b767f87f645afb11ecf85f","isrc":"BEMB82300002","name":"Blijf Nog Even Hier","registered_at":"2026-06-07T22:40:42Z","spotify_id":"2X60zkTkEkgDHkJsn6dF82","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4310f8507bc7fdaa47efce3dc286b643bec3d9206b767f87f645afb11ecf85f. 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/2X60zkTkEkgDHkJsn6dF82.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/2X60zkTkEkgDHkJsn6dF82.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb374e0f31ad705c6d0e59bb54fd40058e843f64598a0a5a674a82c6ea000eb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7pQlEyvpQOGIkWAKKrbcnj.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/7pQlEyvpQOGIkWAKKrbcnj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ce4c0d96ded75c627fe243040f24d9a243df5ea908ebb55a8222d2a42d2f96. 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/3Jw40fLvcj3ibC5dZjiqB9.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/3Jw40fLvcj3ibC5dZjiqB9.
{"copyright_id":"0x72b2cad7e7112c4a0c2397c4d12199d29873adbf55b9978e428a56f0828b3dcf","isrc":"BEMB82500024","name":"Tot Het Leven Begint","registered_at":"2026-06-10T22:38:26Z","spotify_id":"0iSHOvPkslxTSWLpPrQQ66","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b2cad7e7112c4a0c2397c4d12199d29873adbf55b9978e428a56f0828b3dcf. 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/0iSHOvPkslxTSWLpPrQQ66.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/0iSHOvPkslxTSWLpPrQQ66.