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 0x34c12b959f77499b3d8caf81a73863b733796a465d098917dea15896147386da. 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/1907a071-0e3f-4711-aef2-56c99495a9e2.json and https://artists.proofprofile.net/proofs/artist/1907a071-0e3f-4711-aef2-56c99495a9e2.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 0x6fe5b1a960dd2d5af851ac82311df20c73076ee73f9a88ebe90b74a827df880d. 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/6C0mw6QYB0yrRDCYL23qtJ.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/6C0mw6QYB0yrRDCYL23qtJ.
{"copyright_id":"0x18a901649f9a3ceb3596ba251e2702d2f948a5be26f23f4f9b8f90fdf1e5caa8","isrc":"BRDAO0600003","name":"Pra Registra","registered_at":"2026-06-10T01:01:51Z","spotify_id":"0BCVtVN8uwK5sNV3DGFsUX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a901649f9a3ceb3596ba251e2702d2f948a5be26f23f4f9b8f90fdf1e5caa8. 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/0BCVtVN8uwK5sNV3DGFsUX.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/0BCVtVN8uwK5sNV3DGFsUX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e524266a7cdb99574a936f1b9ad5078e0a30abd12d2c5f4b5ae2a400748424. 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/2W5Z9KaZIoAYnibS0EcfJh.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/2W5Z9KaZIoAYnibS0EcfJh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a39cb5d66861c4ea3ec576e3c06b78055e3d7b10336b08d678b548b32c8a91. 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/3DNFTaypaCKAOzQww23OVY.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/3DNFTaypaCKAOzQww23OVY.
{"copyright_id":"0xd0d2c8add19f1b11e4ec120b5e58a89110a745afd29957280c2f3b71c1a96fcd","isrc":"BRDAO0600009","name":"Sem Bilhete Nego","registered_at":"2026-06-08T20:09:28Z","spotify_id":"2qFzr2j7viqV0xjwz56o7N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d2c8add19f1b11e4ec120b5e58a89110a745afd29957280c2f3b71c1a96fcd. 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/2qFzr2j7viqV0xjwz56o7N.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/2qFzr2j7viqV0xjwz56o7N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0797ee6658872114ae4090d0f11d98dee6fc823d337e7671c6f22034e4a667e. 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/2dqwABa3gmW2P6lkxQ4kVm.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/2dqwABa3gmW2P6lkxQ4kVm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf753c8d591e205aaff82cfa3e2cd8a5653e2724ee4b1f2b5ddbf584b9164400e. 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/1UFAbeTtzFeqW2OTZPhC70.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/1UFAbeTtzFeqW2OTZPhC70.
{"copyright_id":"0x12badf4c159753e0836d7eb34668bfbc09beaff16d61249cc25ed50d75e6ef92","isrc":"BRDAO0600004","name":"Mó Mamão","registered_at":"2026-06-20T06:23:14Z","spotify_id":"63LxGGQeCelGxPogObIW5f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12badf4c159753e0836d7eb34668bfbc09beaff16d61249cc25ed50d75e6ef92. 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/63LxGGQeCelGxPogObIW5f.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/63LxGGQeCelGxPogObIW5f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47668b83a8f6d8f69ec769bffaa77db6390867c4463c5cd84d717d48f6e454fa. 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/7AynG2ZKzwtJnEHozqHU72.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/7AynG2ZKzwtJnEHozqHU72.
{"copyright_id":"0x7f0501609cc2a23edeb6f631e0a8f70ecaddcd93cacdaa8b94bf7a4627c6a2df","isrc":"BRDA01300001","name":"1000 Fantasmas","registered_at":"2026-06-20T23:21:48Z","spotify_id":"6KNicTZq6yjD6csby39OQ8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0501609cc2a23edeb6f631e0a8f70ecaddcd93cacdaa8b94bf7a4627c6a2df. 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/6KNicTZq6yjD6csby39OQ8.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/6KNicTZq6yjD6csby39OQ8.
{"copyright_id":"0x16d6ec8fbf0a6605fcb2ab572e825bd0b8bd41ebbf2e3f764351586ec5f4f7b7","isrc":"BRDA01300003","name":"Gordão Chefe","registered_at":"2026-06-19T09:25:52Z","spotify_id":"61sRJcIPQR8A25VYVJMYnK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d6ec8fbf0a6605fcb2ab572e825bd0b8bd41ebbf2e3f764351586ec5f4f7b7. 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/61sRJcIPQR8A25VYVJMYnK.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/61sRJcIPQR8A25VYVJMYnK.
{"copyright_id":"0x7da7faec567d85c59536965de4d851e1e3a02c3bffc1d1436e88008a24afa6ad","isrc":"BRDA01300004","name":"Como um Gangster","registered_at":"2026-06-04T15:35:24Z","spotify_id":"79PE4uJGflYzcFGDIR1upO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7faec567d85c59536965de4d851e1e3a02c3bffc1d1436e88008a24afa6ad. 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/79PE4uJGflYzcFGDIR1upO.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/79PE4uJGflYzcFGDIR1upO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8092c298807444540e20dd0bd95197fff223c1316a8fea302dc72fbc4e987aa. 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/7IZvPErl548WXwqHABeNuS.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/7IZvPErl548WXwqHABeNuS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d3762462ca7054be0108c82f7884dabd61e761207d40aff595b1f1b1947587. 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/1W0W1Fp33fhSyG40Pd6LvD.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/1W0W1Fp33fhSyG40Pd6LvD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efb9f1f88cf5474224095729899ea48571de6c786b18d1d7164c5bd07d78746. 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/0RXWiUS74aAFgcid7DtPo1.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/0RXWiUS74aAFgcid7DtPo1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506118b20fee4661e9ea1c27ffca4ac8740a4417517f8053e6c1ef05f2974ac. 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/6Y1BRpUmmk3w4Ab9kmvVwz.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/6Y1BRpUmmk3w4Ab9kmvVwz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab58fb39477629433208939dd41d9aa63df5dde973e1a4516aa04ff3e67c622. 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/72bp9xOYl7pjxyxVhr0nmo.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/72bp9xOYl7pjxyxVhr0nmo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3528c0f41c6c15f0d76bb03c945d47b9a87fd4dfb2d21eaf21330ffbf00bb388. 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/0h5ioYHAiEO9E9qlzlk3mA.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/0h5ioYHAiEO9E9qlzlk3mA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04521741603822076e5a220f555667a8cbd88751c2b0c1fbab15bbd340903c4. 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/5nArQNzFdyfkSE5OCOEOFQ.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/5nArQNzFdyfkSE5OCOEOFQ.
{"copyright_id":"0x98460413d9e0fe9c80fc46eebcaa3d73e758acb3a5da9ee15252e0ae54b56678","isrc":"BRDA01300015","name":"Os Inímigos Estão Próximos","registered_at":"2026-06-18T14:31:00Z","spotify_id":"3H8pFTo2cZtzBAZZmZXeJj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98460413d9e0fe9c80fc46eebcaa3d73e758acb3a5da9ee15252e0ae54b56678. 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/3H8pFTo2cZtzBAZZmZXeJj.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/3H8pFTo2cZtzBAZZmZXeJj.
Bloca Broca (Entre Putas, Inimigos, Amores e Sonhos)
Bloca Broca - Entre Putas, Inimigos, Amores e Sonhos
DBS Gordão Chefe no Estúdio Showlivre (Ao Vivo)
Sinto Muito Baby / Como um Gangster - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fb7163ee7940936ed211b789b054c016fcb8f7f80e5beec67673a86a2cc552. 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/7yXhCLwFbj4L5WEhgX62L4.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/7yXhCLwFbj4L5WEhgX62L4.
{"copyright_id":"0x77c5ce121205d30800d5ce241e2cf10ac5fc2fa7eabce9cd320a5986298c18da","isrc":"BRDA01700002","name":"Quantas Vezes Não Me Achei","registered_at":"2026-06-05T04:27:24Z","spotify_id":"0oO4xCbs3r8B6xwwBO4ypi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c5ce121205d30800d5ce241e2cf10ac5fc2fa7eabce9cd320a5986298c18da. 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/0oO4xCbs3r8B6xwwBO4ypi.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/0oO4xCbs3r8B6xwwBO4ypi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fb7163ee7940936ed211b789b054c016fcb8f7f80e5beec67673a86a2cc552. 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/5CAa0DM8TK8XZmAaGOhTQ6.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/5CAa0DM8TK8XZmAaGOhTQ6.
Quantas Vezes Não Me Achei (Deluxe Edition)
Sem Bilhete Negooo (Ao Vivo Show Estúdio)
Sem Bilhete Negooo - Ao Vivo Show Estúdio
Sem Bilhete Negooo - Show Estudio (Ao Vivo)
Sem Bilhete Negooo - Show Estudio - Ao Vivo
Sinto Muito Baby / Como Gangster - Ao Vivo
Bandidos - Manos e Minas (Tapes Perdidas) [Ao Vivo - Banda]
Bandidos - Manos e Minas (Tapes Perdidas) - Ao Vivo - Banda
Policia e Bandido (Ao Vivo) [Tapes Perdidas]
Policia e Bandido (Tapes Perdidas) [Ao Vivo]
Policia e Bandido (Tapes Perdidas) - Ao Vivo
Que Beleza (Homenagem - Tapes Perdidas) [Ao Vivo]
Que Beleza (Homenagem - Tapes Perdidas) - Ao Vivo
Respeito É pra Quem Tem (Ao Vivo) [Tapes Perdidas]
Como Gangster (Tapes Perdidas) [Ao Vivo]
Como Gangster (Tapes Perdidas) - Ao Vivo
Sinto Muito Baby (Ao Vivo) [Tapes Perdidas]
Sinto Muito Baby (Tapes Perdidas) [Ao Vivo]
Sinto Muito Baby (Tapes Perdidas) - Ao Vivo
1000 Fantasmas - Ao Vivo - Tapes Perdidas
Qui Nem judeu - Ao Vivo - Tapes Perdidas
Policia e Bandido - Ao Vivo - Tapes Perdidas
Gordão Nunca Tá Só - Ao Vivo - Tapes Perdidas
O Clã da Vila - Ao Vivo - Tapes Perdidas
Sem Bilhete Nego - Ao Vivo - Tapes Perdidas
Sinto Muito Baby - Ao Vivo - Tapes Perdidas
Tá no Meu Nome, Pt.1 - Ao Vivo - Tapes Perdidas
Tá no Meu Nome, Pt. 2 - Ao Vivo - Tapes Perdidas
Eazy Ley Gato União Caracas e os Maiorais - Edition - Tapes Perdidas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79d07c52d54cea5910cf33548770775fcb37b2f268b3cc003a1835d31d5aabe. 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/2XBAf2lmNyXoBm1SoW67OH.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/2XBAf2lmNyXoBm1SoW67OH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3893acb252245ee0f66cffdfc8c5fb7162627272dca5fc6579a23f3a419d92. 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/6QckrDrRu6xp9A9EoDIKYm.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/6QckrDrRu6xp9A9EoDIKYm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5d6c450a809ce18b6c22f70308c672ecfe6b3aae1b4dff7448aded3a02e7c1. 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/7aRXj76d6uGr0JK8nIorgV.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/7aRXj76d6uGr0JK8nIorgV.