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 0xbe823e9c9be4628a6b496f6bab6e002bcb44e23f33c26bf6524b39a9deda9bb4. 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/053cee63-b835-4058-8598-f8f76fb55d41.json and https://artists.proofprofile.net/proofs/artist/053cee63-b835-4058-8598-f8f76fb55d41.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 0x3c9d4f8cbeb6ad9fb291cacb5fcd1f8726f3654ca3a59de1b145cd52f9f5a398. 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/6Lyig51FRfsvKeSHY8KAzQ.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/6Lyig51FRfsvKeSHY8KAzQ.
{"copyright_id":"0xe820d2380cca599a5a3f2bbbf0a679c419f487b2a0b95f5e678d42de73abdcf1","isrc":"USDY41760578","name":"Chceme Mier","registered_at":"2026-06-09T17:29:19Z","spotify_id":"5Nwfdir3qfFtd9Y4nC9a9M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe820d2380cca599a5a3f2bbbf0a679c419f487b2a0b95f5e678d42de73abdcf1. 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/5Nwfdir3qfFtd9Y4nC9a9M.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/5Nwfdir3qfFtd9Y4nC9a9M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba76de325fc369dcec7472b6de0664d036832877dbcc48f9f2753dd991b691f4. 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/1bXY4eDFvo3WyxYjniHF4U.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/1bXY4eDFvo3WyxYjniHF4U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67e2d1b98a1febf58245ad964f8bef710a56eb6e4c6115d7feec87a0e92e1b6. 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/0RsglaCumqQ7Ni6C6v7Fzz.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/0RsglaCumqQ7Ni6C6v7Fzz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9152458763627a4fd8b5b1d4ce55a5eae76d82e4fef10718d50a95a9398de3. 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/1xjGKAhEX5lS2HFujQHMRz.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/1xjGKAhEX5lS2HFujQHMRz.
{"copyright_id":"0x6a8b2f0ab29f0d40910d472403e3c9b7146e35c00e0d69ae88eb5ee18cde6766","isrc":"USDY41760582","name":"Ja Som Bratislava","registered_at":"2026-06-06T17:13:57Z","spotify_id":"2MargNa6F0AO1SkvR7ECuh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8b2f0ab29f0d40910d472403e3c9b7146e35c00e0d69ae88eb5ee18cde6766. 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/2MargNa6F0AO1SkvR7ECuh.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/2MargNa6F0AO1SkvR7ECuh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef501dc169de6833dd8d50584b1106bdf34dd626a2be357126622882ae09ac71. 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/7mZDCmAbLCCcgEF9g6J3kC.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/7mZDCmAbLCCcgEF9g6J3kC.
{"copyright_id":"0x3ec2a3d3ad703b2d828e9500d558aaaeca42abcf3a3c52d00870882a13c108fa","isrc":"USDY41760584","name":"Niečo Je Už Zamnou","registered_at":"2026-06-11T05:39:51Z","spotify_id":"24vzRQLgTThWGkqp8dLcNk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec2a3d3ad703b2d828e9500d558aaaeca42abcf3a3c52d00870882a13c108fa. 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/24vzRQLgTThWGkqp8dLcNk.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/24vzRQLgTThWGkqp8dLcNk.
{"copyright_id":"0xe2282f803aa5c7a35ff339fde5a3f9eb7fe4fae12fdd4504fe2305047f7fbed9","isrc":"USDY41760585","name":"Neviem Kto Je Kto","registered_at":"2026-06-09T17:26:25Z","spotify_id":"13RgNrnU0wPFyapkOS9dDW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2282f803aa5c7a35ff339fde5a3f9eb7fe4fae12fdd4504fe2305047f7fbed9. 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/13RgNrnU0wPFyapkOS9dDW.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/13RgNrnU0wPFyapkOS9dDW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d11582c2135b3c1d3bb7743f20c391591f6c95ee0b83451bcc6725ae68d79e1. 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/54tfcDRzNY0h4Ee4Z6U3zI.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/54tfcDRzNY0h4Ee4Z6U3zI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77757167c6f9554a1931bccd05bb98cd476ce2d81507b239ae99c1e953c1b235. 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/3FPguSLDduBqG4jJNs7LHT.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/3FPguSLDduBqG4jJNs7LHT.
{"copyright_id":"0xf4f04bd180918f0eb2c361f690c2eb1e904e09feb06aedba9903b5122ea05f17","isrc":"USDY41760588","name":"Rap Je Moj Šport","registered_at":"2026-06-22T19:48:33Z","spotify_id":"0syJnq1UhLSNnLO4h0ElEb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f04bd180918f0eb2c361f690c2eb1e904e09feb06aedba9903b5122ea05f17. 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/0syJnq1UhLSNnLO4h0ElEb.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/0syJnq1UhLSNnLO4h0ElEb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47289cc1b0d995b103d086c5579e7c0b8f6e0960c5f9862cff11b00a45287f40. 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/7cyeHbm1cDSHNGUg6dcKHH.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/7cyeHbm1cDSHNGUg6dcKHH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614682ace73061de79648278b4a86fa414976905d5b58b77284cf15f8431c50f. 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/2GtRDfli1o0sn5RLK1vhWV.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/2GtRDfli1o0sn5RLK1vhWV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf89d7bb110c75d21ef5317fd64e3e7e8756e9134eccf8eec8de11a6c3727604. 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/31hQIqSyUsrX9czS68cCI1.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/31hQIqSyUsrX9czS68cCI1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd344c8a838b190c0b36d361d18c1538642a4ab9fc621771229ae7dc921187b9. 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/6O7kjH2R5tFf7NIuxj4SL3.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/6O7kjH2R5tFf7NIuxj4SL3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40b9eaa08c2541a58d7947daf74ff279827a13f9647e0f0ffc1c513785625db. 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/2chD276Yg3ctjlscQKGiQi.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/2chD276Yg3ctjlscQKGiQi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599690f340affaf0b9c52a336c589ded91aaaf5c3eb394553aced8cb28801fd7. 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/351EltPxo7IJwijmTQPnnu.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/351EltPxo7IJwijmTQPnnu.