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 0xaf5799df0317e20e0f561cdde562598d18a71ce0a0b8bb9849d7ab3b5a0dc1c4. 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/382a6d4c-a3a9-4adb-8e40-dda8155f83a1.json and https://artists.proofprofile.net/proofs/artist/382a6d4c-a3a9-4adb-8e40-dda8155f83a1.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 0xdebc141458fe9e707c2e30cc467801de1f841298b29f1789a1e8bba413731f22. 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/30VYCZsuSS9VqPTTDewDDw.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/30VYCZsuSS9VqPTTDewDDw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84bdb973f52783686811df40e1dc33e9f4a992c6f169f866d179ed9134bd7e9. 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/7L1Tus3MzZlakd7fvzlZ52.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/7L1Tus3MzZlakd7fvzlZ52.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2773f1079fed273e5ac6f225e3c7c52ba5eead664b5c1e448c1886ee6717c560. 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/3PKGob0x1RJky11hXaEP4z.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/3PKGob0x1RJky11hXaEP4z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6707834bf1c353e93c75f6c34db7b4e9a7fd20d93bba473f920dc2ef62c4811c. 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/77QE7gesMyuzrZih6PjrJb.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/77QE7gesMyuzrZih6PjrJb.
{"copyright_id":"0x216e001a948e3abbdb48ce727d1dd46ee97841d883d656001d4d3abe32ed8df8","isrc":"BKOUP2500012","name":"Mês de Fevereiro","registered_at":"2026-06-24T08:15:56Z","spotify_id":"546JIYIWmy5lKMhWYVJrxG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216e001a948e3abbdb48ce727d1dd46ee97841d883d656001d4d3abe32ed8df8. 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/546JIYIWmy5lKMhWYVJrxG.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/546JIYIWmy5lKMhWYVJrxG.
{"copyright_id":"0x0f2d07c349b33790e96ab46e45290462c474bfffcba3abaa23b00b7da1e537f6","isrc":"BKOUP2500009","name":"Bigodin na Regua","registered_at":"2026-06-05T12:37:17Z","spotify_id":"7rORA47abEMY37CPcWiqpu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2d07c349b33790e96ab46e45290462c474bfffcba3abaa23b00b7da1e537f6. 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/7rORA47abEMY37CPcWiqpu.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/7rORA47abEMY37CPcWiqpu.
{"copyright_id":"0x8c335c1e88b8fdb6bb8b6e9e4257bef72424817cccdbbff8531257ce02010cda","isrc":"BKOUP2400083","name":"Cabelin na Trena","registered_at":"2026-06-05T12:37:33Z","spotify_id":"0XRrdkLzBctPP7pHnefjyb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c335c1e88b8fdb6bb8b6e9e4257bef72424817cccdbbff8531257ce02010cda. 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/0XRrdkLzBctPP7pHnefjyb.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/0XRrdkLzBctPP7pHnefjyb.
{"copyright_id":"0xc8f52e42b98a64a42cbaa2ba08969b0a365a9da261c6d83a3c502d7febdf7357","isrc":"BKOUP2400078","name":"Revoada de Bandido","registered_at":"2026-06-23T06:49:30Z","spotify_id":"1F8o1trcrz22Q1ukyRQl0W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f52e42b98a64a42cbaa2ba08969b0a365a9da261c6d83a3c502d7febdf7357. 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/1F8o1trcrz22Q1ukyRQl0W.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/1F8o1trcrz22Q1ukyRQl0W.
{"copyright_id":"0xdd9b31774441c0db935bd038da2ce6c53c62b4bdac00ab7822cf8fe903e0810b","isrc":"QZNJW2479541","name":"Mina Surtada","registered_at":"2026-06-23T09:02:41Z","spotify_id":"0u30jh0RJpLGmXg6yI1yw9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9b31774441c0db935bd038da2ce6c53c62b4bdac00ab7822cf8fe903e0810b. 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/0u30jh0RJpLGmXg6yI1yw9.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/0u30jh0RJpLGmXg6yI1yw9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d12c16f76209c7c4035dbaf796abf14642e69bc025b0490adf9c4858822b1a4. 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/6vp3jWAbh2Roc9KkLQU6dn.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/6vp3jWAbh2Roc9KkLQU6dn.
{"copyright_id":"0x7357ae991c6c9f0356a32e1457f9933b787f924aca94b8c6eacf2c1298dc8c1c","isrc":"QM6MZ2405932","name":"Rainha do Tamborzão","registered_at":"2026-06-08T20:10:59Z","spotify_id":"4690ofTHNbPcV5aOvEWcf9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7357ae991c6c9f0356a32e1457f9933b787f924aca94b8c6eacf2c1298dc8c1c. 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/4690ofTHNbPcV5aOvEWcf9.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/4690ofTHNbPcV5aOvEWcf9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e3b93d857ee32ab2f948c568b269cc62f0fe4184b5cff26a63b55d8dc6f29. 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/4I1TB4u3rMTPSZ9yx2hXY6.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/4I1TB4u3rMTPSZ9yx2hXY6.
{"copyright_id":"0x8b4ab526166f4dd9aaee5f409bf23f63bd05c901734f80ecf6a717ed2f180061","isrc":"US7VG2456354","name":"Se Essa Puta Fosse Minha","registered_at":"2026-06-25T21:11:10Z","spotify_id":"16YAjlkipZtdhEkC9aAnPI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4ab526166f4dd9aaee5f409bf23f63bd05c901734f80ecf6a717ed2f180061. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/16YAjlkipZtdhEkC9aAnPI.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/16YAjlkipZtdhEkC9aAnPI.
{"copyright_id":"0x322e956aae2c00409cddb33b8cd8271db5acf2692068bf92289f154c7c64a1c7","isrc":"BCHFD2400377","name":"Tesão Acumulado","registered_at":"2026-06-04T06:33:16Z","spotify_id":"0j4K6xGIMHQU8UpxxyRHV3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e956aae2c00409cddb33b8cd8271db5acf2692068bf92289f154c7c64a1c7. 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/0j4K6xGIMHQU8UpxxyRHV3.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/0j4K6xGIMHQU8UpxxyRHV3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43326fb1e8bb023b68292556060508a0bc066fcf1f97f2ceebe7223b8933cfc1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7idOQP1gj9KlEYKVnNCQC3.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/7idOQP1gj9KlEYKVnNCQC3.
{"copyright_id":"0x3c130a15c08ba771e469754a47e29cbbc24436c59b6df92d5ca94a3d944725ec","isrc":"ESA112318722","name":"Dangerous (feat. Dj Chadin do C)","registered_at":"2026-06-07T07:32:15Z","spotify_id":"6fMl1GRDhuNogRG7ZT0xGg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c130a15c08ba771e469754a47e29cbbc24436c59b6df92d5ca94a3d944725ec. 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/6fMl1GRDhuNogRG7ZT0xGg.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/6fMl1GRDhuNogRG7ZT0xGg.