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 0x6a62a7b4a7b14ec811c4852c902a03e008d29e1fa9f09cf4227cbe9278c72e51. 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/c977bb63-db4a-41bf-86dc-d2729176f304.json and https://artists.proofprofile.net/proofs/artist/c977bb63-db4a-41bf-86dc-d2729176f304.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 0x597cb280b0fd824e1d14e89e3e28fdb53c1190d6d96db5bb73c9b498ab656c25. 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/57PnZig8l0W6RUDoIuLxee.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/57PnZig8l0W6RUDoIuLxee.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0525c79d3b60216cacbb2de4899afcdee8ad33f2d91093787902b6cae9c5b6c1. 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/7eACmxh9pQuzo4dngit83j.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/7eACmxh9pQuzo4dngit83j.
{"copyright_id":"0x51bf9405d462e53dfe4713a591b40d96dc0fcd5b577820939c231bfe4cfd7a01","isrc":"USCGJ2345283","name":"Black & White","registered_at":"2026-06-23T14:59:33Z","spotify_id":"1UMvdWrYHmdUdm2lmkJ6EX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bf9405d462e53dfe4713a591b40d96dc0fcd5b577820939c231bfe4cfd7a01. 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/1UMvdWrYHmdUdm2lmkJ6EX.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/1UMvdWrYHmdUdm2lmkJ6EX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847a770bbbf49de033e6abd58f9fe0f3ee00adc73f24038c3c87fe3e94d2f114. 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/3OYMVeZRuXAbTPTPy1hb9T.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/3OYMVeZRuXAbTPTPy1hb9T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b125be5ac0ddf02b9ef576a553b9104442365c8b70f0c96ec4aff640d645a2. 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/6teK1ppcJwdMpMeF0VLzIu.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/6teK1ppcJwdMpMeF0VLzIu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49366287c3707596475e64f56b8d47386b119872ba43f0c0d250cab2197076d1. 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/00IFRFkvFMXYUYXOuG9gGl.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/00IFRFkvFMXYUYXOuG9gGl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7bec90c93542350cee64c34742b4894dff2a815e17217e073203f906e45b5. 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/0xTQ4Z8BuMTSQFFhockef2.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/0xTQ4Z8BuMTSQFFhockef2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f19b1dbdf1292f709edb56e581bdb01c70841c2e587bd026e3eea3711f6607. 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/1EaBG8ulmNX3VDqEVxOhEX.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/1EaBG8ulmNX3VDqEVxOhEX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ee6c03a71334eca096929166d32d2f5e9373662c9f5d5064e5c6e193b7117c. 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/6wXF6fWSgiyhr8ldOqcyzk.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/6wXF6fWSgiyhr8ldOqcyzk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f64a4bbb64f597bf472cd800579a6b080801d750eb35ca7853dfc8a09c62e. 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/73eamSYHMdNoDRlKMbAGRY.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/73eamSYHMdNoDRlKMbAGRY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41dc4cf591d613f67f8d2513bd3e57a1c51017ed3e8d29fdac62a1f3d9346d. 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/685UENqizi0gElqK5vQ5jU.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/685UENqizi0gElqK5vQ5jU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd20cbfd59b54367a41f06abe81cde1e2e90e21441f4ddcc5b57afa7d61825e0. 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/3qussbYKe9A9gpR5kwoAyO.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/3qussbYKe9A9gpR5kwoAyO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366f706c47e8458383005dc814e39b4222b42961e5979017885f8796d53f9ff7. 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/5zZ6vbw1jqH4ELpEQR8arL.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/5zZ6vbw1jqH4ELpEQR8arL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2428dbcd4e278deef2c81e177094e7d34aad95979717dbb3d698e2887bf0370. 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/6E2Lg3yevTzOGiLHUPhwKG.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/6E2Lg3yevTzOGiLHUPhwKG.
{"copyright_id":"0xec667efacf9e0cd2387bfc838ad1e4d00d761b0f79d3eda5108657aa5ca7fa73","isrc":"ATRG72002216","name":"Melodica (Valles-T Vs Chang)","registered_at":"2026-06-27T03:37:53Z","spotify_id":"6cZQy40fl5fxNcwBbrDKjr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec667efacf9e0cd2387bfc838ad1e4d00d761b0f79d3eda5108657aa5ca7fa73. 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/6cZQy40fl5fxNcwBbrDKjr.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/6cZQy40fl5fxNcwBbrDKjr.
{"copyright_id":"0x50333e6211ef940a410ab31013c3e8ae92b7278b11b9b4c042d0d8fbc97ef430","isrc":"ATRG72002218","name":"Soledad (Snk Vs Zasko Master)","registered_at":"2026-06-27T03:17:49Z","spotify_id":"76w6IAqihLVTcctpWoQ5LN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50333e6211ef940a410ab31013c3e8ae92b7278b11b9b4c042d0d8fbc97ef430. 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/76w6IAqihLVTcctpWoQ5LN.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/76w6IAqihLVTcctpWoQ5LN.
{"copyright_id":"0x5a6e0b30ba1e1b61f1c80d7e6aa32e82bfe20463f197005253a291d8dba0ef04","isrc":"SE5BU1902306","name":"Pangea - Versión instrumental","registered_at":"2026-06-18T05:25:05Z","spotify_id":"0E2cqpwVkIbpE7otilJNta","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e0b30ba1e1b61f1c80d7e6aa32e82bfe20463f197005253a291d8dba0ef04. 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/0E2cqpwVkIbpE7otilJNta.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/0E2cqpwVkIbpE7otilJNta.
{"copyright_id":"0x8171c1b0bac20f2ae4d2c112782999f4d5ec07b2ad0b2152047a4252a5158367","isrc":"SE5BU1902304","name":"Guns - Versión instrumental","registered_at":"2026-06-20T11:40:16Z","spotify_id":"577aJWXagvwRMhMRaMP2rd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8171c1b0bac20f2ae4d2c112782999f4d5ec07b2ad0b2152047a4252a5158367. 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/577aJWXagvwRMhMRaMP2rd.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/577aJWXagvwRMhMRaMP2rd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e294e892dd1fc1d9ae9966648a1b4909185b1f0773921becea08c44fa267c6. 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/25gnXA7p5r3VXjwvnDUyFQ.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/25gnXA7p5r3VXjwvnDUyFQ.
{"copyright_id":"0x56ffaed759074555fe9a8f9b21a5d5ed17acb0ef61a5966eee06d7999e87d5a8","isrc":"SE6I31974208","name":"MALDITO BACH","registered_at":"2026-06-21T18:47:58Z","spotify_id":"0iTJxwZgxXdxa7XkwWhICV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ffaed759074555fe9a8f9b21a5d5ed17acb0ef61a5966eee06d7999e87d5a8. 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/0iTJxwZgxXdxa7XkwWhICV.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/0iTJxwZgxXdxa7XkwWhICV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2258004456cad70970408f9e6c6cea2f6829621ec6fc190824be508720601. 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/7JcSyx9uTDxmoz8pS32Iy2.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/7JcSyx9uTDxmoz8pS32Iy2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa395c9d80d8de548fef5038f53daa31718207f5e00369bc72f989e0a3df24854. 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/2VZZny8dDVSAyIvGUQvjkX.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/2VZZny8dDVSAyIvGUQvjkX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe27ed786cd16f93f8c7d7a88c016a1cd80ea11c149ce51366be2821df59281. 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/77xMEVtpm90gJWV9DBSj35.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/77xMEVtpm90gJWV9DBSj35.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2006e86241c5a6e537833f40d5f671f52579e4095efbd333bf69609eb25021. 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/1TwXBAuCUx7mpK3fG25JL7.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/1TwXBAuCUx7mpK3fG25JL7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb27de1b2cefd909a98b71b8fe40c431c862ecdbd65722693fb20a9221801c90. 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/5M4zWiymktzhaXCjNMYlZn.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/5M4zWiymktzhaXCjNMYlZn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4266a2d79a95b606fa3a00b6e2042d624ad86479657b0e743290c92fd454d587. 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/2bqdltvze8LZiCsa4kVhth.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/2bqdltvze8LZiCsa4kVhth.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77040e50bc82c70a05b797a17c94e061e5d5a0f31882eba1bfb55052c070aac8. 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/0M0PJ504iktxDDtoImcb0Y.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/0M0PJ504iktxDDtoImcb0Y.
{"copyright_id":"0xece73f21a5c9e1bbdcb85164b152605c798c6807d01cb0a9ab4e5afb40b551c0","isrc":"SE5752194177","name":"Eptos Uno Session","registered_at":"2026-06-23T13:27:51Z","spotify_id":"629JzrHQBMEeytGuN8zeh4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece73f21a5c9e1bbdcb85164b152605c798c6807d01cb0a9ab4e5afb40b551c0. 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/629JzrHQBMEeytGuN8zeh4.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/629JzrHQBMEeytGuN8zeh4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24960df5bcab7a648fcb957dbea5764a649e1fcf15f57937c78627f24736b6a5. 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/7Ct5g8a6CNfSnmftk8f8jN.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/7Ct5g8a6CNfSnmftk8f8jN.
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