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 0xbbebd472b9091ee353bc82292dd7d34841dc377e97928534152fe41cf670aa8a. 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/03ba1496-2f47-4d3d-b772-bb14e0d5bfa1.json and https://artists.proofprofile.net/proofs/artist/03ba1496-2f47-4d3d-b772-bb14e0d5bfa1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x0a2759ec6e89f3badb263e27a8eefc89e34c3f46216c9490eea52731fcce8762","isrc":"BXKG22302108","name":"Cheiro de Mato","registered_at":"2026-06-04T09:11:38Z","spotify_id":"3wcbaeM7n6Y97JpQQJeNVz","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 0x0a2759ec6e89f3badb263e27a8eefc89e34c3f46216c9490eea52731fcce8762. 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/3wcbaeM7n6Y97JpQQJeNVz.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/3wcbaeM7n6Y97JpQQJeNVz.
{"copyright_id":"0xedc757a93352b019e9470fb1ce0925c78207cce908eba3d887244de79f8e67ed","isrc":"QZGLM2478158","name":"Cheiro de Mato - Remix","registered_at":"2026-06-20T01:59:57Z","spotify_id":"5jddc7KfX3oACkdvnFPLj6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc757a93352b019e9470fb1ce0925c78207cce908eba3d887244de79f8e67ed. 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/5jddc7KfX3oACkdvnFPLj6.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/5jddc7KfX3oACkdvnFPLj6.
{"copyright_id":"0x10d234dceb88db338197a5298a8fdb3908de7b80d36ee76ca7b223a84ed0edda","isrc":"BXKG22403105","name":"Só Mais uma Vez","registered_at":"2026-06-23T06:38:20Z","spotify_id":"1P9KNyBbu3rG0X6kxy4MLO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d234dceb88db338197a5298a8fdb3908de7b80d36ee76ca7b223a84ed0edda. 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/1P9KNyBbu3rG0X6kxy4MLO.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/1P9KNyBbu3rG0X6kxy4MLO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f56171e45886b7b86c175fcbb56d04c3c939341b13865628c341c1e50c36658. 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/7GN9xSd7ESQUW2p3n7ZE5f.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/7GN9xSd7ESQUW2p3n7ZE5f.
{"copyright_id":"0x155708b3fcfd45439a6d298fc171fab2639ffaf99f036fc9a9bc11dd63347be6","isrc":"BXKG22500436","name":"Fabricada na Roça 2","registered_at":"2026-06-06T15:17:20Z","spotify_id":"7eOEqv2EGSnyIjWNJMDnZX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155708b3fcfd45439a6d298fc171fab2639ffaf99f036fc9a9bc11dd63347be6. 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/7eOEqv2EGSnyIjWNJMDnZX.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/7eOEqv2EGSnyIjWNJMDnZX.
{"copyright_id":"0xb7ab3358df2fb9787bc097f81f6b5a65fb1aed709d8cb836db465ca4e8266e5a","isrc":"BXKG22301179","name":"Set \"Exalando Love\"","registered_at":"2026-06-22T01:01:32Z","spotify_id":"5ZK7Dfs0t6ZEFTSVPa2YoE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ab3358df2fb9787bc097f81f6b5a65fb1aed709d8cb836db465ca4e8266e5a. 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/5ZK7Dfs0t6ZEFTSVPa2YoE.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/5ZK7Dfs0t6ZEFTSVPa2YoE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f46568558065fd8f8c2fcf5fce3112041d5f9f9e23f8674118f2f295bd407b. 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/52tX6tj4GBPxDYBGHRdhBF.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/52tX6tj4GBPxDYBGHRdhBF.
{"copyright_id":"0x5ce8edbf9c2080957df29f7cb7179e5291e8ea3dfb7a50dfcea4c03ed8ea2684","isrc":"BKDFK2400158","name":"Duas Ferrari","registered_at":"2026-06-22T00:58:01Z","spotify_id":"1K6viLEqnXeOeRTYx6Olj5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8edbf9c2080957df29f7cb7179e5291e8ea3dfb7a50dfcea4c03ed8ea2684. 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/1K6viLEqnXeOeRTYx6Olj5.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/1K6viLEqnXeOeRTYx6Olj5.
{"copyright_id":"0x1ec9cc1af2b1957f76651736b9e5700db3b11bed94de9f8cbffef3f67c55accd","isrc":"BXWCK2300005","name":"Boiadeira E Maloqueiro","registered_at":"2026-06-07T00:34:28Z","spotify_id":"4GmLw9S1ESLXbY4SRJSyd6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec9cc1af2b1957f76651736b9e5700db3b11bed94de9f8cbffef3f67c55accd. 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/4GmLw9S1ESLXbY4SRJSyd6.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/4GmLw9S1ESLXbY4SRJSyd6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421997951859c25211c81909474f60237b1e04b33dbcd21c48bdc938e7a520d. 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/7qyljL7CwZAMcHw5LuFnKm.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/7qyljL7CwZAMcHw5LuFnKm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef00ca725b6fae7f685fa58981513c481aa912bfab23805763fe056ad2450ab. 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/7Gff7RjmFnfmGSAJm8Ql3M.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/7Gff7RjmFnfmGSAJm8Ql3M.