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 0x113cf8a5c91ee55830891b17d84d6872080b46824c660c9217f6eb33d5abcb49. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e21a60c3-1dd5-4417-95da-8d04a9675105.json and https://artists.proofprofile.net/proofs/artist/e21a60c3-1dd5-4417-95da-8d04a9675105.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sentimientos de Ayer, en la Cumbia de Hoy
Peregrines Will Carry You Over The Hills
These Weeds — The Ones That Do The Impossible
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 0x59402f8bd56c05e543b9e199387dd4d37f3204e4950bfe8309ee3c2e6a5b3bb8. 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/4eGBqCn7D6XOvVnymkOW81.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/4eGBqCn7D6XOvVnymkOW81.
{"copyright_id":"0x5544e97a626c216cb5676a7af9a0d15abf4eb19a3626e89be3b41ed55dc2e0b3","isrc":"BRUM70500693","name":"Esperando Na Janela - Ao Vivo","registered_at":"2026-06-18T13:36:19Z","spotify_id":"6x2UTcmMZZaeEO53Nhnhte","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5544e97a626c216cb5676a7af9a0d15abf4eb19a3626e89be3b41ed55dc2e0b3. 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/6x2UTcmMZZaeEO53Nhnhte.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/6x2UTcmMZZaeEO53Nhnhte.
Tentei Te Esquecer/Coração Está Em Pedaços/Fica Comigo
{"copyright_id":"0xb4464465490e859ab238449e9e5df4e27faa99de211ee3b374974da9f1670296","isrc":"BRUM70700307","name":"Tentei Te Esquecer/Coração Está Em Pedaços/Fica Comigo","registered_at":"2026-06-04T07:24:31Z","spotify_id":"3JOdhqw8R31G4lpx0smUGF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4464465490e859ab238449e9e5df4e27faa99de211ee3b374974da9f1670296. 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/3JOdhqw8R31G4lpx0smUGF.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/3JOdhqw8R31G4lpx0smUGF.
{"copyright_id":"0x5544e97a626c216cb5676a7af9a0d15abf4eb19a3626e89be3b41ed55dc2e0b3","isrc":"BRUM70500693","name":"Esperando Na Janela - Ao Vivo","registered_at":"2026-06-18T13:36:19Z","spotify_id":"6HnGwppJnWcrloyjo0IxV8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5544e97a626c216cb5676a7af9a0d15abf4eb19a3626e89be3b41ed55dc2e0b3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HnGwppJnWcrloyjo0IxV8.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/6HnGwppJnWcrloyjo0IxV8.
Voz, Emoção, Viola e Violão - Lembranças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614d039bd3c255ccd61641e4ef6b73163b193173b4fab0c47da80e8f44b7533d. 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/2p59vhqkCSIyquhqLk9zrD.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/2p59vhqkCSIyquhqLk9zrD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614d039bd3c255ccd61641e4ef6b73163b193173b4fab0c47da80e8f44b7533d. 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/1I2EH4z8pXrbN3R7BFvqSP.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/1I2EH4z8pXrbN3R7BFvqSP.
Maluco Por Você - Os Maiores Sucessos De César Menotti & Fabiano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212519120ec7a6737a5578a8dced007460765175dc9c70560e51ba223cee2b3. 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/0tUVX35p7zXSBw1cI0UGTf.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/0tUVX35p7zXSBw1cI0UGTf.
Mensagem Pra Ela / Me Apaixonei (A Primeira Vez Que Eu Te Vi) - Live 2008
{"copyright_id":"0x2711d408debd125a78faf5f0e466da54b0eac0ff075ec5ab1287ed8a23995b64","isrc":"BRUM71101102","name":"Mensagem Pra Ela / Me Apaixonei (A Primeira Vez Que Eu Te Vi) - Live 2008","registered_at":"2026-06-05T12:34:12Z","spotify_id":"5pPmfIemPc1MqwFM80ld7o","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2711d408debd125a78faf5f0e466da54b0eac0ff075ec5ab1287ed8a23995b64. 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/5pPmfIemPc1MqwFM80ld7o.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/5pPmfIemPc1MqwFM80ld7o.
{"copyright_id":"0xe372dfed031181fd9cf90a5f7ce013a6fedabab7ee14e4c2b3d5d3728db81559","isrc":"BRUM70801168","name":"Caso Por Acaso - Live","registered_at":"2026-06-07T11:47:46Z","spotify_id":"4b4Wikq2ni6UTWxtvzf2Hq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe372dfed031181fd9cf90a5f7ce013a6fedabab7ee14e4c2b3d5d3728db81559. 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/4b4Wikq2ni6UTWxtvzf2Hq.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/4b4Wikq2ni6UTWxtvzf2Hq.
{"copyright_id":"0xfb0dd06b4fe0eef22764fed25ab94da709ef3992fb4bea6179597a8f701dda4e","isrc":"BRUM70500683","name":"Caso Marcado - Ao Vivo","registered_at":"2026-06-09T17:42:37Z","spotify_id":"18PrRGUaAEonwxMtDp9D4E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0dd06b4fe0eef22764fed25ab94da709ef3992fb4bea6179597a8f701dda4e. 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/18PrRGUaAEonwxMtDp9D4E.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/18PrRGUaAEonwxMtDp9D4E.
{"copyright_id":"0xc715f88df6481aeba337a2f7b81ae1713044e168eb5dcfec5bae7abf1b87d914","isrc":"BRUM70801170","name":"www.Volta Pra Mim - Live","registered_at":"2026-06-22T01:20:42Z","spotify_id":"0XXDJrs8v8rmXaHlfevmcb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc715f88df6481aeba337a2f7b81ae1713044e168eb5dcfec5bae7abf1b87d914. 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/0XXDJrs8v8rmXaHlfevmcb.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/0XXDJrs8v8rmXaHlfevmcb.
{"copyright_id":"0xb1064b1481a0b62a604f0c70d69bec56cd97777a1e6cb657684bf730fe51b3c9","isrc":"BRUM70801173","name":"Pára De Chorar - Live","registered_at":"2026-06-06T10:45:20Z","spotify_id":"7zIj4HOkMRcDsvARy1NOsG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1064b1481a0b62a604f0c70d69bec56cd97777a1e6cb657684bf730fe51b3c9. 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/7zIj4HOkMRcDsvARy1NOsG.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/7zIj4HOkMRcDsvARy1NOsG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45a0796ec0f2e60459e5cbf299f46f8cbb9a3b745deaf896f44a49fea332ca3. 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/6gmPlNrtEAHRpvxOLiIkZ8.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/6gmPlNrtEAHRpvxOLiIkZ8.
{"copyright_id":"0x96cb43cbe4260fe9de9cb69e9eb13a87a9825d0877a52a2711156c16ffcef384","isrc":"BRUM70801179","name":"Se O Rei Mandar - Live","registered_at":"2026-06-10T17:44:50Z","spotify_id":"4L4oqdGnSeoNhGjqekSfeZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cb43cbe4260fe9de9cb69e9eb13a87a9825d0877a52a2711156c16ffcef384. 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/4L4oqdGnSeoNhGjqekSfeZ.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/4L4oqdGnSeoNhGjqekSfeZ.
{"copyright_id":"0x16053211d87d091d520ceccf89a1f9c37e4ab1495e1bc2c27dee8f67c87cebee","isrc":"BRUM70801165","name":"Talvez - Live","registered_at":"2026-06-22T01:08:00Z","spotify_id":"1Yyq2UC7BxCX3saJPbJozZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16053211d87d091d520ceccf89a1f9c37e4ab1495e1bc2c27dee8f67c87cebee. 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/1Yyq2UC7BxCX3saJPbJozZ.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/1Yyq2UC7BxCX3saJPbJozZ.