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 0xe4de9701d9e733f068c94f1ff427454fa6155b310922755fbcd30dd8a426c272. 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/c98d0de1-22be-4a89-80e8-5125fcf1f21b.json and https://artists.proofprofile.net/proofs/artist/c98d0de1-22be-4a89-80e8-5125fcf1f21b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb4884a94b82af5b4f0c74e9e8e6a7d4de98a84e303a8dcb5a8ffea46986fb3b6","isrc":"QZDA62441736","name":"Quiere que la parta","registered_at":"2026-06-23T06:42:26Z","spotify_id":"6BZXj56YR2UBkJXpUpNHfB","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 0xb4884a94b82af5b4f0c74e9e8e6a7d4de98a84e303a8dcb5a8ffea46986fb3b6. 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/6BZXj56YR2UBkJXpUpNHfB.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/6BZXj56YR2UBkJXpUpNHfB.
{"copyright_id":"0xdd903541e684fa5d245cb683b0c887fdca31a8dd09164432db3e595fcb86e9da","isrc":"QZWFP2434384","name":"Cara de bebè","registered_at":"2026-06-18T21:44:48Z","spotify_id":"7ePPW2lbBjaCpbvAm4g0k9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd903541e684fa5d245cb683b0c887fdca31a8dd09164432db3e595fcb86e9da. 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/7ePPW2lbBjaCpbvAm4g0k9.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/7ePPW2lbBjaCpbvAm4g0k9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd250065022b545f5a7b43091d47b9a9075d2fe37826b7bc5c0dae21655e231b1. 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/1SWHPMpVZw9la7fAPj8Kic.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/1SWHPMpVZw9la7fAPj8Kic.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efbbfde148f474c47655c61db3214244501754cdfb5b78790f8a0634e3f2004. 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/5RXtaxuf46qQ6akQMZQNbP.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/5RXtaxuf46qQ6akQMZQNbP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593b4677e85471a50d036df54c721db3480449e9a74f1c9278cbf3b55945862d. 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/1BKVu8xKqNkjzzf3P3nMKH.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/1BKVu8xKqNkjzzf3P3nMKH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe825a9910c2035bbcff4da32d0733f8d1500c5a484f32fbb967ef9622db4c591. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2AJbigj4r5eRZm4lVLexQG.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/2AJbigj4r5eRZm4lVLexQG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45228b048bdd036c23906d4096958757c700746c759cd07c29d3d1d08f9da9ce. 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/5dERrcB9eCq5x44BbpQQfp.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/5dERrcB9eCq5x44BbpQQfp.
{"copyright_id":"0x3c343a55419e5d156e3c7c1ba754718decc4cb570d6a7a3836da4ce185b453c2","isrc":"MXF152200906","name":"Swipe-Up (feat. Zkiper Mami & Eipi)","registered_at":"2026-06-26T18:44:26Z","spotify_id":"73fHJnfVKO0n5a7sLTE9ej","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c343a55419e5d156e3c7c1ba754718decc4cb570d6a7a3836da4ce185b453c2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/73fHJnfVKO0n5a7sLTE9ej.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/73fHJnfVKO0n5a7sLTE9ej.
{"copyright_id":"0x2d4e42a1aefec5dd3d3d6c2c404a42b37fb964a2878397e2c1c0cce3c8c24f11","isrc":"MXF152200907","name":"Perreo Kbrn (feat. Zkiper Mami)","registered_at":"2026-06-08T11:14:31Z","spotify_id":"3tit8QySZnvBXXwHcg54xb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4e42a1aefec5dd3d3d6c2c404a42b37fb964a2878397e2c1c0cce3c8c24f11. 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/3tit8QySZnvBXXwHcg54xb.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/3tit8QySZnvBXXwHcg54xb.
{"copyright_id":"0x8fb2accd8823afbc4b396eff47761d0d536ff1dce3625b9550a9f4aadef478f5","isrc":"MXF152200908","name":"Chica Goga (feat. Zkiper Mami)","registered_at":"2026-06-25T07:37:30Z","spotify_id":"7ns3yu7V4DDMEjNosur0M8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb2accd8823afbc4b396eff47761d0d536ff1dce3625b9550a9f4aadef478f5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7ns3yu7V4DDMEjNosur0M8.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/7ns3yu7V4DDMEjNosur0M8.
{"copyright_id":"0x5962a3ad746d68ad3c69a46fbbaf5fa177877fd2f7c6cc7253ebec8b258854ad","isrc":"BK4DA2406709","name":"Puti (feat. Cris Sour)","registered_at":"2026-06-09T10:34:31Z","spotify_id":"6TEO66iZudZfzJgploMPLN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962a3ad746d68ad3c69a46fbbaf5fa177877fd2f7c6cc7253ebec8b258854ad. 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/6TEO66iZudZfzJgploMPLN.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/6TEO66iZudZfzJgploMPLN.