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 0x5fb56b0358093fda596a40643178a3a0f52979f24d2070b3c48a1bd6f59d4762. 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/7e908a06-28af-409a-aee8-ba30c0a1cca7.json and https://artists.proofprofile.net/proofs/artist/7e908a06-28af-409a-aee8-ba30c0a1cca7.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 0xfb96597c04d904e8db8f478051b00c78843baeaaef8bf82554630be99636b2e9. 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/6L63UklWUcFLB86HXQnNR6.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/6L63UklWUcFLB86HXQnNR6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397a56e59481a16e923a0fb4512947d548d3f897eb37507a2a8eb5da5b73320d. 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/4ycnpTN1gmqOfxkLfBNbWB.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/4ycnpTN1gmqOfxkLfBNbWB.
{"copyright_id":"0x10e3a90fc6e423f7465dbcabbca1ef6ba7b458fe306c20c982661619810d5f21","isrc":"QZNJW2072939","name":"SACARTE TO'","registered_at":"2026-06-04T15:19:39Z","spotify_id":"5HlxMGUTMNsnHWJSzdQcxN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e3a90fc6e423f7465dbcabbca1ef6ba7b458fe306c20c982661619810d5f21. 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/5HlxMGUTMNsnHWJSzdQcxN.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/5HlxMGUTMNsnHWJSzdQcxN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9645d0259ef1d728699b40f95cedefac1ad2843653400328eb5182bc5334c27. 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/0Bue0KeMCaYP2RNn0OTDPq.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/0Bue0KeMCaYP2RNn0OTDPq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c276d73ef6d10bbd6c6f395df6df5283b461814a857601cc04399d0c95573. 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/0jizWh29OJMwTFZZ01nzxp.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/0jizWh29OJMwTFZZ01nzxp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee9066462a68ba15a5b4c512f1d068bca181a35d51b48957eaf8150b386250. 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/5zZwYsMztTGMPwWvlYoCfp.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/5zZwYsMztTGMPwWvlYoCfp.
{"copyright_id":"0x245ab6eb37debbf4ec171de4d85cfd945d28753eef7899f47daf006b5c5efc7d","isrc":"QZNJW2072943","name":"MORDIENDO EL BOZAL","registered_at":"2026-06-04T07:43:27Z","spotify_id":"6NnqP2DazV1Q1mqmV1JNYC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245ab6eb37debbf4ec171de4d85cfd945d28753eef7899f47daf006b5c5efc7d. 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/6NnqP2DazV1Q1mqmV1JNYC.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/6NnqP2DazV1Q1mqmV1JNYC.
{"copyright_id":"0x4ea61f025fb207c671daf44923d0c934c7b7617c091fe7e3a26c54986eff0ab1","isrc":"QZHZ62177445","name":"Infinito al Doble","registered_at":"2026-06-05T20:15:31Z","spotify_id":"0GnAvYHtwWi1x2BosdNDf5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea61f025fb207c671daf44923d0c934c7b7617c091fe7e3a26c54986eff0ab1. 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/0GnAvYHtwWi1x2BosdNDf5.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/0GnAvYHtwWi1x2BosdNDf5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7019b761226959f848b75feaa8b32d95b3565b0216884b2dee57cc08b3c54eee. 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/0slrMPh8Cyu2oMU30OZL34.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/0slrMPh8Cyu2oMU30OZL34.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4524f363768b486fa027e04a21db7f9d2ba0d6c76027f07c98e90ba4237f77c5. 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/526Hqske3qpXIfIUI8AqgA.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/526Hqske3qpXIfIUI8AqgA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c143d7f05b0a1b3ecbf14c295e4963488793af5f4e69bee56271e6c6f7b3a14. 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/7yL28cV1mfIB9679CzGVdd.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/7yL28cV1mfIB9679CzGVdd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeea6244d72b85c04aad2ac6ca44644fa93968c1d5df8223fd2186141d59873. 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/29FgYkGpg7LPdDcRfP3JqT.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/29FgYkGpg7LPdDcRfP3JqT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ae251842ed5c24d4c3e53549f7dfc347365d91e62b6525d26b6107b6815e04. 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/0QAW0ie9f4ESxDVacurCFi.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/0QAW0ie9f4ESxDVacurCFi.
{"copyright_id":"0x133b729aef11e1400aca60047bb5436ce18d26ffcf6b6ab71a63fd9a32c668cf","isrc":"AREZZ2000023","name":"Muero de Fiesta Este Finde","registered_at":"2026-06-04T11:42:00Z","spotify_id":"3hiWmFAUAGu0pgDSv2LZZt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133b729aef11e1400aca60047bb5436ce18d26ffcf6b6ab71a63fd9a32c668cf. 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/3hiWmFAUAGu0pgDSv2LZZt.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/3hiWmFAUAGu0pgDSv2LZZt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f01c305ad50383fb6c4907292c001d33da1ba927edc1cc15b96b341f62fe0b. 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/6sPEHT3coWNOJ8ZFamf9uS.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/6sPEHT3coWNOJ8ZFamf9uS.
{"copyright_id":"0x108701cee7cd7751afb47d26f768c932f943d5a4e3ff3608b5059cf25ef0abcb","isrc":"QZW9K2367449","name":"NO DA MÁS","registered_at":"2026-06-01T12:41:58Z","spotify_id":"7jDYmAWdghEWmQyqwLpriE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108701cee7cd7751afb47d26f768c932f943d5a4e3ff3608b5059cf25ef0abcb. 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/7jDYmAWdghEWmQyqwLpriE.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/7jDYmAWdghEWmQyqwLpriE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca440709d13faf41642921a2cd5053ca277aab8c860a77ce364461050052011a. 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/2FPE3JcSvRoCNSC96KAyvB.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/2FPE3JcSvRoCNSC96KAyvB.
{"copyright_id":"0x7a50de14935e430bdf8e398f81eb4ba69a35c14dca0d9be53201c1a9fd0e8d78","isrc":"QZW9L2249677","name":"PA ESTA SOLEDAD","registered_at":"2026-06-04T09:48:49Z","spotify_id":"3PiVYS45zOYxpE37UDN1ZA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50de14935e430bdf8e398f81eb4ba69a35c14dca0d9be53201c1a9fd0e8d78. 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/3PiVYS45zOYxpE37UDN1ZA.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/3PiVYS45zOYxpE37UDN1ZA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69243c70a22dc780cd7d2c0ad0255a83a3d1cbe744f57536f0b8f5a9d2991ad9. 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/6esPLhNIxICEhay8xDSuMM.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/6esPLhNIxICEhay8xDSuMM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108701cee7cd7751afb47d26f768c932f943d5a4e3ff3608b5059cf25ef0abcb. 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/3Tv6frzq72EHVXSXQVqAOY.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/3Tv6frzq72EHVXSXQVqAOY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb96597c04d904e8db8f478051b00c78843baeaaef8bf82554630be99636b2e9. 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/07etBMW6BWSlKijJr55GaR.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/07etBMW6BWSlKijJr55GaR.