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 0x1b93b83979fbc4e68b7582a7feec337954c96b66dfdc8cdc147508ee80c795bd. 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/f3096e7d-9d87-408c-9b96-5a8310aedfe7.json and https://artists.proofprofile.net/proofs/artist/f3096e7d-9d87-408c-9b96-5a8310aedfe7.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 0x123ae8f37690b412c1f28e216ce07d273340e3117aa398b3b5cbee66c370399f. 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/1eaSUH7D2hAs9LIOg6MWGQ.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/1eaSUH7D2hAs9LIOg6MWGQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18c3ec8118f51a0b33d52fc1560339e07b0699cfe6960501622a0c17c9b2bb5. 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/0gXA2CyCfqOOtIgBr9dYNG.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/0gXA2CyCfqOOtIgBr9dYNG.
{"copyright_id":"0xed9f54a313af56f4515e7e16c1e0fee93c92e7fa1d75eacf03a81aa746087f55","isrc":"USDY42483310","name":"Boletos do Coração","registered_at":"2026-06-06T12:40:24Z","spotify_id":"1XDHTRUo2781l1FXr6GJkP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9f54a313af56f4515e7e16c1e0fee93c92e7fa1d75eacf03a81aa746087f55. 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/1XDHTRUo2781l1FXr6GJkP.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/1XDHTRUo2781l1FXr6GJkP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3328bd72d32a7ad7dbc50b3d8cd7279fc6219fef48616a267bbacf5777dbd82e. 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/6FKEkAbyQsA2cltPTfV0u4.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/6FKEkAbyQsA2cltPTfV0u4.
{"copyright_id":"0x2badea8b4c0528c2e20451c73617cfba5ca31feb94cc8095deac040d303b1c05","isrc":"USMH92339933","name":"Mais uma Vez","registered_at":"2026-06-07T00:46:37Z","spotify_id":"7lsCxJyMxD4gdJSCOczzCL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2badea8b4c0528c2e20451c73617cfba5ca31feb94cc8095deac040d303b1c05. 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/7lsCxJyMxD4gdJSCOczzCL.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/7lsCxJyMxD4gdJSCOczzCL.
{"copyright_id":"0xcd0d0f827238fd28ea13e1c8c79f973c2279f2c11235fe7a57a0a165eebd041e","isrc":"USCGH2355782","name":"Caixa de Saudade","registered_at":"2026-06-05T18:10:17Z","spotify_id":"48BEyyX9efom5ypnSr78Ic","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0d0f827238fd28ea13e1c8c79f973c2279f2c11235fe7a57a0a165eebd041e. 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/48BEyyX9efom5ypnSr78Ic.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/48BEyyX9efom5ypnSr78Ic.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea1e1f883fb5b56c9700d9090b7acbd9b1fc0abc04411a6379376ac7f56fed2. 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/3CQhLLFvzaTOJZoYtl31P5.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/3CQhLLFvzaTOJZoYtl31P5.
{"copyright_id":"0x51cecc140275870dfd0960aba3dc373dd990d9562ab9af3b85aa57e2e7611a88","isrc":"USL4Q2227189","name":"Coração Galinheiro","registered_at":"2026-06-21T09:19:54Z","spotify_id":"606rd2U8wlwTWfIQJAE8hH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cecc140275870dfd0960aba3dc373dd990d9562ab9af3b85aa57e2e7611a88. 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/606rd2U8wlwTWfIQJAE8hH.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/606rd2U8wlwTWfIQJAE8hH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd776ad849f784876a88db30376f87881ea441fba8c3486637833f0d9363273. 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/3WT8JMpycYI0mGYia9PduC.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/3WT8JMpycYI0mGYia9PduC.
{"copyright_id":"0x52b7d9959d86616c8badcc46f4213c06192deba67317fcf03a5bd687f6dee58d","isrc":"USHM82238193","name":"Ainda Não Superei","registered_at":"2026-06-06T06:04:32Z","spotify_id":"5DXgzsdA9OvUUJPGgMvRPk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b7d9959d86616c8badcc46f4213c06192deba67317fcf03a5bd687f6dee58d. 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/5DXgzsdA9OvUUJPGgMvRPk.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/5DXgzsdA9OvUUJPGgMvRPk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd294e9aa061aecf7a6c56cf6b4e06ada8564647adac2d903dae809d92b7b5fc. 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/0OQrPLUUYc30qtSaQlktuT.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/0OQrPLUUYc30qtSaQlktuT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56994b427e72ca3920de1cab667595b2950d336762e5cb2a3fa50bab18e77b8. 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/0SAdbnhGOyqE6xk1vbIkHK.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/0SAdbnhGOyqE6xk1vbIkHK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065e400e71c6f856a844eaecfd9eac068f177e52292edc41b8e513f5a3bdfb41. 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/1RffO3gsgH15waxgM6dmCO.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/1RffO3gsgH15waxgM6dmCO.
{"copyright_id":"0x7227b0e9cfc8850fbd1329a68728a102f494b4fea919f42015abafe31d0f0e0b","isrc":"BXV961900059","name":"Bebendo Pra Esquecer","registered_at":"2026-06-22T08:05:09Z","spotify_id":"1lHeF0zLXr3hxAGL7BwmSQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7227b0e9cfc8850fbd1329a68728a102f494b4fea919f42015abafe31d0f0e0b. 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/1lHeF0zLXr3hxAGL7BwmSQ.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/1lHeF0zLXr3hxAGL7BwmSQ.