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 0xdf44cbf57f383c3dcf5dc687c7b311f4b6091f4020a40595bc2f28235d176cf8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87c81146-780b-4b22-b2d6-5ff116724b9a.json and https://artists.proofprofile.net/proofs/artist/87c81146-780b-4b22-b2d6-5ff116724b9a.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 0x79fec080a10b588c71663ea41799ce58dfd74f97e3dfa2b7434f00056cd01db6. 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/025LbqfPIP0ievHfWPH8Ho.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/025LbqfPIP0ievHfWPH8Ho.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9783183fba454672861ea2268310f4fd877d9edd6913f0a9dd1c7615bc602f8b. 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/0p7bMjaCpIpIJ2oQBYa5gF.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/0p7bMjaCpIpIJ2oQBYa5gF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1b32651edaf798a7422ae3049d668b1b0517b75c5fd5cb48a75e735fad5056. 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/4XXcpTJdlG7W4NeBp1eamc.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/4XXcpTJdlG7W4NeBp1eamc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37964d7c83f4ea27f18de74caf066ccf1369fdef45f6f5db775bdbcdbcc53510. 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/3Hht6cLBEaeLJ8ZY647YCF.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/3Hht6cLBEaeLJ8ZY647YCF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05704b2f1046e5d562a6d0b3bc425b102b8aaffe4f2f67fd80754e84e4ba85. 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/28eFaf8Ze279KmtVWVGprZ.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/28eFaf8Ze279KmtVWVGprZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2446b3e5af1e87a715c28f72b1fd9ec55455cde195427e71028d2656e1dea0d0. 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/3En9K3VwSi5HAv2vqPBO6E.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/3En9K3VwSi5HAv2vqPBO6E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef23ed8fc83e33b5847fcff7a583f017665b01d46200ea834e21088eaf3c6e9. 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/0KtnhVxS6Z6V2Zxu3J5FZW.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/0KtnhVxS6Z6V2Zxu3J5FZW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26365f575cc5c667d3fc87443ecbf23d66dc1ba6d4b92f1e00a6d2453dca4b64. 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/4fMjZjNrxwKHZwKrLBzrdV.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/4fMjZjNrxwKHZwKrLBzrdV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc71b2333eca0f7f421f4e74d709cef9c024247e992c050abe13b68360cd748. 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/6749oxtDuaRo54LEXt2xbV.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/6749oxtDuaRo54LEXt2xbV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0677618a02a0e9788be1d9c9ee9f43340f464f6d12e053147e8be05ac7acbb. 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/3NnJmRn40HEvn46nP69w5K.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/3NnJmRn40HEvn46nP69w5K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e1025a42a948b3068a80008aa825f12514cfa117fe4cdea07cf84a3a637df5. 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/3Di0kxZmxCdEFeOwzmj2Am.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/3Di0kxZmxCdEFeOwzmj2Am.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783c3bc9c7f8e079421a739c04ca0a8f1b45c7a118f958e01a838f11ac434016. 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/3DnQieFr35ELDiuNHLdndk.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/3DnQieFr35ELDiuNHLdndk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242ccce12816f519e181b972dfd41184c9f2cf8d9a05deb9e02e29c10cb6590a. 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/56vCrFTFMExUFJ0V9H9zv9.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/56vCrFTFMExUFJ0V9H9zv9.
{"copyright_id":"0x9f451e24be2a1c987f3c8df70b3890dd8f4c5969361facbbfa7890b5ea17d1e7","isrc":"DEYT72100544","name":"What Would You Do","registered_at":"2026-06-24T22:41:28Z","spotify_id":"5BHFgpwnXecXeH1lN8qXIA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f451e24be2a1c987f3c8df70b3890dd8f4c5969361facbbfa7890b5ea17d1e7. 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/5BHFgpwnXecXeH1lN8qXIA.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/5BHFgpwnXecXeH1lN8qXIA.
{"copyright_id":"0x486132a8d2605afebd18b3adf62b0f322a2a0748ef7b67e3bfbb068f22390ebe","isrc":"DEYT72100502","name":"No Promises","registered_at":"2026-06-08T23:22:01Z","spotify_id":"1K0UiuC2FIZ8SPGHwLlaMU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486132a8d2605afebd18b3adf62b0f322a2a0748ef7b67e3bfbb068f22390ebe. 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/1K0UiuC2FIZ8SPGHwLlaMU.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/1K0UiuC2FIZ8SPGHwLlaMU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbf0f69f0cd419d5043bd29474a016c7fc3ce2d5a7daba1541180a04ad405e8. 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/6u1Il4bJkEXdgpMeqtSerN.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/6u1Il4bJkEXdgpMeqtSerN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6548385c899e981cec4377f9e76820aa91862f13c02728431a5e4f9507056e2a. 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/5WHdbegcbV13BGZMKG8yAD.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/5WHdbegcbV13BGZMKG8yAD.