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 0x84a449371e8a06f72c0a0310b5959789da7ce55ec1b8007dfd40901f851dc8a1. 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/34dae3ad-ad91-4259-872c-5cc61a05fc7f.json and https://artists.proofprofile.net/proofs/artist/34dae3ad-ad91-4259-872c-5cc61a05fc7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xfe30b0d713083b842a3ad0a212f942527a4b9540c4b6d70b5dd34c8c335d7604","isrc":"QZNWQ2232460","name":"Shutter Island","registered_at":"2026-06-10T07:39:47Z","spotify_id":"7tmhfuvir5MoSEmeAzKFyh","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 0xfe30b0d713083b842a3ad0a212f942527a4b9540c4b6d70b5dd34c8c335d7604. 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/7tmhfuvir5MoSEmeAzKFyh.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/7tmhfuvir5MoSEmeAzKFyh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9e13e38066206c5f85a8d714df4b6e9c88a5730d0a436998a9b038776eaf0. 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/2mmfkub4Ags1bvHGgzuXhz.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/2mmfkub4Ags1bvHGgzuXhz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8c43e21230788ab3ad043b1fc05613c8f721aafbdcc53ca56e40b8a7d82a75. 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/6Nq3s05tJwiZxAQ6nkiyb1.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/6Nq3s05tJwiZxAQ6nkiyb1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f33fa7664593e2f21ef1b577d43989bbb1ad8c6dd1652d2026d2e74bbac65. 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/5YroYfFR7ZZhFkQGd3n110.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/5YroYfFR7ZZhFkQGd3n110.
{"copyright_id":"0x5be289af6c501de2143bcaae78b040ada0ead1c6f61059239aa58443073a3ad0","isrc":"SE6TI2132273","name":"JUAN CARLOS VALERON","registered_at":"2026-06-25T14:27:46Z","spotify_id":"65Z3Mu8pFcOautMjYiQInX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be289af6c501de2143bcaae78b040ada0ead1c6f61059239aa58443073a3ad0. 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/65Z3Mu8pFcOautMjYiQInX.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/65Z3Mu8pFcOautMjYiQInX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2bfd881a420feb40aa0b290137e4be48a7b6d344e3c4dffe0af6761851bace. 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/2mRgNp8xmBMLQYNP76VB2u.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/2mRgNp8xmBMLQYNP76VB2u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fafdbb76606386ca91cea39fd406205995e49cc0033cadb8bc15fbd907d5aad. 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/13SfxhAVaFaKWpjo5FRI9K.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/13SfxhAVaFaKWpjo5FRI9K.
{"copyright_id":"0x4c75534a27d4972e222cf09d5bf2e4c83a8b869f962a9502bd12dfccbb9c7268","isrc":"SE6TI2132280","name":"ILUSIONES ROTAS","registered_at":"2026-06-10T22:06:23Z","spotify_id":"2yzHiCQUkECSB6NSZGeXqo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c75534a27d4972e222cf09d5bf2e4c83a8b869f962a9502bd12dfccbb9c7268. 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/2yzHiCQUkECSB6NSZGeXqo.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/2yzHiCQUkECSB6NSZGeXqo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837adc147c630e62a2593e2e304d589c9fc31e69d2b665bbb8edd7904eb68c42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0w9TCW669Wv4xN2eOReH5h.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/0w9TCW669Wv4xN2eOReH5h.
{"copyright_id":"0x4cbf27c095cc9343a473271f372afb4de4c9cd3851d6db5bf021a0abbd9d9e7a","isrc":"GBKQU2390729","name":"Sangrando (Skills Room Vol.10)","registered_at":"2026-06-22T11:52:14Z","spotify_id":"3EOvKTAI6nvjFFCTaUZra6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbf27c095cc9343a473271f372afb4de4c9cd3851d6db5bf021a0abbd9d9e7a. 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/3EOvKTAI6nvjFFCTaUZra6.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/3EOvKTAI6nvjFFCTaUZra6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16920f6c12aa7fb4f70832d4bbfba242d4a850f768555afcafc6aad8c3e77a0b. 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/7AN8FlCySCa3MQi9au02vL.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/7AN8FlCySCa3MQi9au02vL.
{"copyright_id":"0xc71bdc204a3ef88bf43d3be22200df0d8f93d400a257ef4df134defd8424d89f","isrc":"SE6QE2224086","name":"PORSCHE CAYENNE","registered_at":"2026-06-25T00:39:22Z","spotify_id":"0GuWxJNeCCmv5ZdRTuOAP4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71bdc204a3ef88bf43d3be22200df0d8f93d400a257ef4df134defd8424d89f. 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/0GuWxJNeCCmv5ZdRTuOAP4.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/0GuWxJNeCCmv5ZdRTuOAP4.
{"copyright_id":"0xc83a76e1ed8f1c7403aea7c43335c4377e7c70c55bf9a4a588cee6dfd6474209","isrc":"SE62M2100420","name":"LABIOS SELLAOS","registered_at":"2026-06-20T12:29:32Z","spotify_id":"0CahrQJMBIEsMvJpXkvIe4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83a76e1ed8f1c7403aea7c43335c4377e7c70c55bf9a4a588cee6dfd6474209. 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/0CahrQJMBIEsMvJpXkvIe4.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/0CahrQJMBIEsMvJpXkvIe4.
{"copyright_id":"0x082bccbea78867f9bead20b467b2c64da64a63bc2a5e25d4f1c8b2f7bd0b2c21","isrc":"SE6XX2191091","name":"PECATA MINUTA","registered_at":"2026-06-10T07:33:06Z","spotify_id":"30aK8NsAkMkRx5JGaleSp0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082bccbea78867f9bead20b467b2c64da64a63bc2a5e25d4f1c8b2f7bd0b2c21. 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/30aK8NsAkMkRx5JGaleSp0.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/30aK8NsAkMkRx5JGaleSp0.
{"copyright_id":"0x45f216ace4be209f9ba7fdcaec0d4d5e0d522ca47c3644bbd98fe1638aa276f4","isrc":"SE6HN2158657","name":"NIÑOS BENDITOS","registered_at":"2026-06-08T01:17:23Z","spotify_id":"3T5IeUjXCQThrerv3yRnvM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f216ace4be209f9ba7fdcaec0d4d5e0d522ca47c3644bbd98fe1638aa276f4. 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/3T5IeUjXCQThrerv3yRnvM.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/3T5IeUjXCQThrerv3yRnvM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd69d04a7144b55d9e00507d5edd74aa4515a910a2701fb0d7e41d77f73d87f. 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/3xeY78nVoRKJLbKKxr54V1.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/3xeY78nVoRKJLbKKxr54V1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580e4fe5dc9b9b2c25366293a662715570432135c6e8e0ddb2e9bc303f8307ef. 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/5vSLr6qYVJvyC1BIEmIzQw.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/5vSLr6qYVJvyC1BIEmIzQw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71435f817c248cd4eea0b6446c99cdbc92b0687fb837ad7f0b68ef2ec9c990. 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/6hM01QnTog22Oq8Oim8j3x.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/6hM01QnTog22Oq8Oim8j3x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea235e8f0830608a05ca33ba81c78eee98429c6d0b48211d44da80aff545ab01. 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/4HXZ84spY8Sw4cQCDyt4gx.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/4HXZ84spY8Sw4cQCDyt4gx.