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 0x34607ec2bbe6b3fcbeeb361022b8f9cafc94ba21100d482746cd4c2ee49d49e3. 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/195cf315-64b9-46da-8904-6e800efdba77.json and https://artists.proofprofile.net/proofs/artist/195cf315-64b9-46da-8904-6e800efdba77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x13edcfa168ce5e19c2d6cd6de102f33e7b043e626fa3a7e1609040d6fd9ca082","isrc":"USSD19404012","name":"Qué Hay de Malo","registered_at":"2026-06-01T10:23:27Z","spotify_id":"7t5cskTjWtXVQ6h1yI69op","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 0x13edcfa168ce5e19c2d6cd6de102f33e7b043e626fa3a7e1609040d6fd9ca082. 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/7t5cskTjWtXVQ6h1yI69op.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/7t5cskTjWtXVQ6h1yI69op.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3dd0aa7ad1db31f6c25e66b6078f4972207772ed811564a4b80c5fda71f448. 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/2WOMIZnu99mzeMo13bZq8m.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/2WOMIZnu99mzeMo13bZq8m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0412090062beb2dd9f96535e61ffa36600d98a1516de74527fc56cb5b9e74b. 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/702GLOtZ2I15Y5nFv4tHlc.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/702GLOtZ2I15Y5nFv4tHlc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287d7bdd0272646e904d2a8dce4267cb3a310ff47164085013507aaae6c58c61. 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/2muANbtPfKlMc6oWnmlk6Y.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/2muANbtPfKlMc6oWnmlk6Y.
{"copyright_id":"0x69b7893aa12c6ac825a8be2e6ed58ed0be80496dfb2a5bdf9fa5273c19ccce40","isrc":"USSD10104956","name":"Esa Niña","registered_at":"2026-06-05T19:35:17Z","spotify_id":"3ahQQn3F9kx6o3vDFvV8jW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b7893aa12c6ac825a8be2e6ed58ed0be80496dfb2a5bdf9fa5273c19ccce40. 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/3ahQQn3F9kx6o3vDFvV8jW.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/3ahQQn3F9kx6o3vDFvV8jW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac3ea92f9a84e06617426c1db2dfa6d380f74c19b64dba5638adc17e4bcd4b0. 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/43CXeLXXrwTRNmh7D5ZYoN.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/43CXeLXXrwTRNmh7D5ZYoN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc320157897dbcf3d36f9f802f5059246dc81c96a8150b734b1c1a132502e9459. 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/6u8491pswW1Fc6U3xZH1nO.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/6u8491pswW1Fc6U3xZH1nO.
{"copyright_id":"0xbdac743d1039fbdbe29770adeddb64ed85df81efa229a7c5f24ae4e605fd4be5","isrc":"USSD19404014","name":"Cuenta Conmigo","registered_at":"2026-06-04T06:50:45Z","spotify_id":"7o47d8KqRqxbL7NloJvjwd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac743d1039fbdbe29770adeddb64ed85df81efa229a7c5f24ae4e605fd4be5. 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/7o47d8KqRqxbL7NloJvjwd.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/7o47d8KqRqxbL7NloJvjwd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3dd0aa7ad1db31f6c25e66b6078f4972207772ed811564a4b80c5fda71f448. 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/0fONy7oqGJZLo9nSQdk4Zj.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/0fONy7oqGJZLo9nSQdk4Zj.
{"copyright_id":"0x41316a9f2f4e5596ca181fed7faf81cbba376cea3e4f861e41ad3cb5ecbe6eda","isrc":"USSD19404016","name":"No Hieras Mi Vida","registered_at":"2026-06-05T05:46:00Z","spotify_id":"3j47G4GqCKYRDVYVOHomQ1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41316a9f2f4e5596ca181fed7faf81cbba376cea3e4f861e41ad3cb5ecbe6eda. 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/3j47G4GqCKYRDVYVOHomQ1.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/3j47G4GqCKYRDVYVOHomQ1.
{"copyright_id":"0x13edcfa168ce5e19c2d6cd6de102f33e7b043e626fa3a7e1609040d6fd9ca082","isrc":"USSD19404012","name":"Qué Hay de Malo","registered_at":"2026-06-01T10:23:27Z","spotify_id":"2pd5j9ywZISPmOOqUO9HGu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13edcfa168ce5e19c2d6cd6de102f33e7b043e626fa3a7e1609040d6fd9ca082. 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/2pd5j9ywZISPmOOqUO9HGu.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/2pd5j9ywZISPmOOqUO9HGu.
{"copyright_id":"0x84111c8d4ea471976291a0002c60d04a0b8dcc6efd6b3540e501454cae1de205","isrc":"USSD19404007","name":"Amores Como el Nuestro","registered_at":"2026-06-01T22:07:56Z","spotify_id":"5DN8RLxUEvWcnctbu4Xs0x","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84111c8d4ea471976291a0002c60d04a0b8dcc6efd6b3540e501454cae1de205. 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/5DN8RLxUEvWcnctbu4Xs0x.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/5DN8RLxUEvWcnctbu4Xs0x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b62b061179885f65fe58a06f010466951f885d6ab364cc959478e971173b876. 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/702rGTYoMhRSHStEI9loje.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/702rGTYoMhRSHStEI9loje.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad69d0e6053a0be9a7bc3e523947292708a8465fea72e41586b27346a01da239. 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/6sFERjg3fGSXL2Omxz6gUs.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/6sFERjg3fGSXL2Omxz6gUs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc3d3326658d5b2d7ba24acb3ad70a98cc554ee4557299630ae35662c8501a. 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/0YMBSfBIH4uhtorLtUdKeP.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/0YMBSfBIH4uhtorLtUdKeP.
{"copyright_id":"0x08a7e94eb49eebeb9b0e8c85c170dae1ce319eed1e92c8bce1bfb8402f97eef1","isrc":"USBL10100094","name":"Quiero - Salsa Version","registered_at":"2026-06-20T20:33:28Z","spotify_id":"1uRdJbYSbCFIATmPbCvVf1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7e94eb49eebeb9b0e8c85c170dae1ce319eed1e92c8bce1bfb8402f97eef1. 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/1uRdJbYSbCFIATmPbCvVf1.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/1uRdJbYSbCFIATmPbCvVf1.
{"copyright_id":"0x62d004b0b72832218e68d78000fa831d4fcbd43c163676114a79fde6e6c4bc50","isrc":"USBL10200343","name":"Vuela Muy Alto - Salsa Version","registered_at":"2026-06-06T14:39:57Z","spotify_id":"1BELcdW12GJvH9qwjBUsnJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d004b0b72832218e68d78000fa831d4fcbd43c163676114a79fde6e6c4bc50. 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/1BELcdW12GJvH9qwjBUsnJ.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/1BELcdW12GJvH9qwjBUsnJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6f8a23d05bf0f1911819cde82ebe29c998f759d74a2f863caacf0d256b870f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5pHtHome2h5cr00lGEGZuM.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/5pHtHome2h5cr00lGEGZuM.
Mi Libertad - with Special Guest: Voltio
{"copyright_id":"0x6f31cfcd57325c1921e39dcbf7b011d17726ce63dda328b9de29ee403b70dbd9","isrc":"USBL10300317","name":"Mi Libertad - with Special Guest: Voltio","registered_at":"2026-06-04T11:27:59Z","spotify_id":"59vjOUQMejuczyFbaoVsbn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f31cfcd57325c1921e39dcbf7b011d17726ce63dda328b9de29ee403b70dbd9. 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/59vjOUQMejuczyFbaoVsbn.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/59vjOUQMejuczyFbaoVsbn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b62b061179885f65fe58a06f010466951f885d6ab364cc959478e971173b876. 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/4rHczyhBZ53pLWgn6edWfB.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/4rHczyhBZ53pLWgn6edWfB.
{"copyright_id":"0x84111c8d4ea471976291a0002c60d04a0b8dcc6efd6b3540e501454cae1de205","isrc":"USSD19404007","name":"Amores Como el Nuestro","registered_at":"2026-06-01T22:07:57Z","spotify_id":"3dUOVExxPh0nmE6DtYVWIE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84111c8d4ea471976291a0002c60d04a0b8dcc6efd6b3540e501454cae1de205. 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/3dUOVExxPh0nmE6DtYVWIE.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/3dUOVExxPh0nmE6DtYVWIE.
{"copyright_id":"0xbdac743d1039fbdbe29770adeddb64ed85df81efa229a7c5f24ae4e605fd4be5","isrc":"USSD19404014","name":"Cuenta Conmigo","registered_at":"2026-06-04T06:50:45Z","spotify_id":"6E8rFM84vwRGoww4ELM2KV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac743d1039fbdbe29770adeddb64ed85df81efa229a7c5f24ae4e605fd4be5. 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/6E8rFM84vwRGoww4ELM2KV.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/6E8rFM84vwRGoww4ELM2KV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b62b061179885f65fe58a06f010466951f885d6ab364cc959478e971173b876. 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/4hw32LMr5RoeKQl0Kvh20e.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/4hw32LMr5RoeKQl0Kvh20e.
{"copyright_id":"0x8ed13ece2d092b5df36a75cc6ebb8cd239c0e1a27ba8c0b945f6a30b9dbf1013","isrc":"USA2P2400909","name":"SIN CORAZÓN (DELUXE)","registered_at":"2026-06-07T06:18:25Z","spotify_id":"4cCYWWYDFaGyKeTFtpWb7m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed13ece2d092b5df36a75cc6ebb8cd239c0e1a27ba8c0b945f6a30b9dbf1013. 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/4cCYWWYDFaGyKeTFtpWb7m.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/4cCYWWYDFaGyKeTFtpWb7m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d35097a06ab7f174b56c6b892953fdb5543ec196bb0cd168a695c2e1bd8b4. 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/6oGkOVDicKQ2aTj3JtStav.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/6oGkOVDicKQ2aTj3JtStav.