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 0xc5ca87cf23d63cc4123532f6d391506e5b5bb471c335234c037e288907eca2bc. 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/30837ced-4cd1-4bc3-b634-53f06788282f.json and https://artists.proofprofile.net/proofs/artist/30837ced-4cd1-4bc3-b634-53f06788282f.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 0xbe10a19c672bab1144fba92664f3668e788845861121eabc26a13ae9d9df6c9e. 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/6UCTg1skfdM6Ythjt4UScd.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/6UCTg1skfdM6Ythjt4UScd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2471bf5db340424af85fdcee3e0a018e9c8660408767c93d68c14e064a5369e. 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/1Ex5Q5ER3mEbL5pISHBJxa.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/1Ex5Q5ER3mEbL5pISHBJxa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2ea2cffe8214548848f71cbb80ff4555575f77d1fbd7d5b495f987e287ee78. 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/7p33eQzc238S0tLVMknXwt.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/7p33eQzc238S0tLVMknXwt.
Se Tiver Incomodado, Bota Aliança no Meu Dedo
Eu Não Sou Piranha Safado É o Teu Marido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bdeba9200e651ccc5882a21b12911ef3da1dc4c53b074e49c17d9e2823ce87. 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/7BsDlC1uBVFMyjEDoOtDDL.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/7BsDlC1uBVFMyjEDoOtDDL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb193f114fe58982f0e2d9162001eb167aad6293c32933b023d9c6bf374259d. 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/6kPfEuZjwodAfhlgUyJx3O.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/6kPfEuZjwodAfhlgUyJx3O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97112a9f66835c18dc5c20ce6b6e6a6db8a73f31a64e6408f4a2d73e804a067. 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/75tBbsga61mOhJsqm7C6Kc.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/75tBbsga61mOhJsqm7C6Kc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2973b3965ec4106a780a93ca9ededdcb9f3051bb97d12eca5618becae06e7. 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/5DjVeNfzulBEc3LIq2fLnl.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/5DjVeNfzulBEc3LIq2fLnl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192011aa046c93df096ed2eb7bbf6862867ebc8478219d115e6a423d86918e08. 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/6HJCS09anJ7CAZhinCxxuB.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/6HJCS09anJ7CAZhinCxxuB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d510964dd98cea7b8cf7a6f89cbc21c674a42222c2117f2bd725849a907b900. 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/6e7DnC8XZwUrMfl344O5IR.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/6e7DnC8XZwUrMfl344O5IR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647e766bd39f1f100c1cc7cd63232e1533084cf87ef8cadc030080fcdeca0027. 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/61J7CbEFiX6ziu4SijfwFO.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/61J7CbEFiX6ziu4SijfwFO.
{"copyright_id":"0xb1cf72d5afa4ec42c8dd386475bdde1af22ada259f72522561e77036e3c24412","isrc":"BKGP92300629","name":"Mulheres Empoderadas","registered_at":"2026-06-07T22:01:34Z","spotify_id":"43ZhSqdC0zjFdjVDAP2Oqh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cf72d5afa4ec42c8dd386475bdde1af22ada259f72522561e77036e3c24412. 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/43ZhSqdC0zjFdjVDAP2Oqh.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/43ZhSqdC0zjFdjVDAP2Oqh.
{"copyright_id":"0xc5430595d169379b36464ea6db6e21f6fd2e908b87d199e5bd8be3721e0edcdf","isrc":"BKGP92300627","name":"Ninguém Ama Ninguém","registered_at":"2026-06-22T00:57:28Z","spotify_id":"1z2JhprrpIx3Frjh59NXud","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5430595d169379b36464ea6db6e21f6fd2e908b87d199e5bd8be3721e0edcdf. 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/1z2JhprrpIx3Frjh59NXud.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/1z2JhprrpIx3Frjh59NXud.