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 0xc63aabaed1b2201a441ccabf64bf43f2ce2411dae184acf9789736da102118fd. 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/4575c7a2-00a4-46d4-8650-669eca6c3e19.json and https://artists.proofprofile.net/proofs/artist/4575c7a2-00a4-46d4-8650-669eca6c3e19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x64052cc1fbe5d56d076a1a915c7ce5255fe7c8209fe091b98ce62582d62aaae8","isrc":"NLYK92300137","name":"Waiting for the Sunshine","registered_at":"2026-06-09T09:08:06Z","spotify_id":"3by7mK2wxEJkmlcpQ17ifu","type":"track"}
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 0x64052cc1fbe5d56d076a1a915c7ce5255fe7c8209fe091b98ce62582d62aaae8. 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/3by7mK2wxEJkmlcpQ17ifu.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/3by7mK2wxEJkmlcpQ17ifu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d3084ff0d4d6ec7b2185a9c3153a8e731c65953e0fd42999db9f8401c5dc5. 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/18FCff8JaRZQjWSMwwRqrN.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/18FCff8JaRZQjWSMwwRqrN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8148085dd9684152dc1f5ee1adf78a9f06203f678baf8c15d93e2da7d30f8e3. 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/7HLn8Zhp7A0cZgcvYyIhr0.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/7HLn8Zhp7A0cZgcvYyIhr0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea9739ef35ae0726137e00a70f1907bc92fa9643bc4d0f3aa828dd1c888b740. 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/4UIhZ2uFixxth2RHITeoV2.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/4UIhZ2uFixxth2RHITeoV2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301bae8cfea717ae9152d38d4fd6e6129ee243246293abf6104a6d32a3b2d259. 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/2Aerb2m0d1HNxFrgPwby4G.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/2Aerb2m0d1HNxFrgPwby4G.
{"copyright_id":"0xf1de8936fed2191d2149c4bae69d7bacda732b7658ed42fff57808ff2feeb47a","isrc":"NLYK92400267","name":"Time To Shine","registered_at":"2026-06-06T12:48:43Z","spotify_id":"2JsxCSle7vxGfVtqUpsxQ3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1de8936fed2191d2149c4bae69d7bacda732b7658ed42fff57808ff2feeb47a. 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/2JsxCSle7vxGfVtqUpsxQ3.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/2JsxCSle7vxGfVtqUpsxQ3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082768380031cebecc0b600a1da164f450cc846114a388fe330994fe711657b1. 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/6BxsbyNV7dTGEeIJ4Pklr4.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/6BxsbyNV7dTGEeIJ4Pklr4.
{"copyright_id":"0x2fc593c12dea1ec4acf98b0491a319f7cf9b23b525f5e98eafbd7f72957ddf70","isrc":"FR6V82084969","name":"Sonnenkind - MÖWE Remix","registered_at":"2026-06-04T07:41:13Z","spotify_id":"5Ldkz9SwI7nkAAunQld3aF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc593c12dea1ec4acf98b0491a319f7cf9b23b525f5e98eafbd7f72957ddf70. 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/5Ldkz9SwI7nkAAunQld3aF.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/5Ldkz9SwI7nkAAunQld3aF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efa1ffee6e71891a4c651fd0fcb4c4cf5057d5fa1341fc2963315d29f5829ea. 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/4cegY6WR786vGop2WVu8V9.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/4cegY6WR786vGop2WVu8V9.