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 0x49a049689d78fd2db158eb82e10b175d938d4c3548de7544698b953e192a3b4b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3737ea7d-9d0b-4f3f-988d-6888f2d7cedc.json and https://artists.proofprofile.net/proofs/artist/3737ea7d-9d0b-4f3f-988d-6888f2d7cedc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x3b29c715edb12bfa6e7ac838167a028b2fed8c48db50e617a76c084fcad2906f","isrc":"GBCKG0500658","name":"Son de Camagüey","registered_at":"2026-06-22T09:54:35Z","spotify_id":"2v7SgtLlbqIswfwf0Rj2dN","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 0x3b29c715edb12bfa6e7ac838167a028b2fed8c48db50e617a76c084fcad2906f. 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/2v7SgtLlbqIswfwf0Rj2dN.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/2v7SgtLlbqIswfwf0Rj2dN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050636ba689136313a3b9031d4bf03428c083c52b03da7165fb95e2f6b43b265. 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/070vRAgWBtWgzDtWex7Unl.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/070vRAgWBtWgzDtWex7Unl.
{"copyright_id":"0xe8fa0f1fb7b49ed3e0451a1dcbfca316a54fe183abf0763ad31aa8a5fba01b8f","isrc":"GBCKG0600134","name":"Los aretes","registered_at":"2026-06-05T10:02:46Z","spotify_id":"2CimHhLjxIQVLfo5T75ABN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fa0f1fb7b49ed3e0451a1dcbfca316a54fe183abf0763ad31aa8a5fba01b8f. 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/2CimHhLjxIQVLfo5T75ABN.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/2CimHhLjxIQVLfo5T75ABN.
{"copyright_id":"0x6108a6637bf8c53e20c6c641ff3cf184f567ca5e6f4ccc577ee058c88a81fc0f","isrc":"GBCKG0500287","name":"Ya pararan","registered_at":"2026-06-07T09:36:33Z","spotify_id":"2XORqUs6zQ9VAC3ULlZzst","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108a6637bf8c53e20c6c641ff3cf184f567ca5e6f4ccc577ee058c88a81fc0f. 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/2XORqUs6zQ9VAC3ULlZzst.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/2XORqUs6zQ9VAC3ULlZzst.
{"copyright_id":"0xb0b7b6f98ca75f77d6abe79999316c467cf6f0332c58c66336d7ce3bbfe21e9f","isrc":"GBCKG0600135","name":"Dame tu Cumbia","registered_at":"2026-06-08T06:16:57Z","spotify_id":"1e2M4hB1epSnDVZyfve3Jt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b7b6f98ca75f77d6abe79999316c467cf6f0332c58c66336d7ce3bbfe21e9f. 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/1e2M4hB1epSnDVZyfve3Jt.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/1e2M4hB1epSnDVZyfve3Jt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e864552043bf5d67fda768235dfc2e22a9893b2da8a4f38157a831308d3a5d9. 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/62sgTXDu3FH7tQCrLoOYqo.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/62sgTXDu3FH7tQCrLoOYqo.
{"copyright_id":"0x08b050d2111deea4321ed2848c35a49b2b2d8a7a0627bf4cfde2f08dac1118f0","isrc":"GBCKG0600139","name":"Vuelve guajiro","registered_at":"2026-06-06T13:24:21Z","spotify_id":"1wR4Y1m2aN5yGUEBJHAkNk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b050d2111deea4321ed2848c35a49b2b2d8a7a0627bf4cfde2f08dac1118f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1wR4Y1m2aN5yGUEBJHAkNk.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/1wR4Y1m2aN5yGUEBJHAkNk.
{"copyright_id":"0x3b29c715edb12bfa6e7ac838167a028b2fed8c48db50e617a76c084fcad2906f","isrc":"GBCKG0500658","name":"Son de Camaguey","registered_at":"2026-06-22T09:54:35Z","spotify_id":"76uzFZDB8MoMwaT1VgJxOF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29c715edb12bfa6e7ac838167a028b2fed8c48db50e617a76c084fcad2906f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/76uzFZDB8MoMwaT1VgJxOF.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/76uzFZDB8MoMwaT1VgJxOF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050636ba689136313a3b9031d4bf03428c083c52b03da7165fb95e2f6b43b265. 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/2SUV3G5dUOiQTKoa9g22ET.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/2SUV3G5dUOiQTKoa9g22ET.
{"copyright_id":"0xe8fa0f1fb7b49ed3e0451a1dcbfca316a54fe183abf0763ad31aa8a5fba01b8f","isrc":"GBCKG0600134","name":"Los aretes","registered_at":"2026-06-05T10:02:46Z","spotify_id":"6GEQM9yoFzdQtALGcILSca","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fa0f1fb7b49ed3e0451a1dcbfca316a54fe183abf0763ad31aa8a5fba01b8f. 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/6GEQM9yoFzdQtALGcILSca.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/6GEQM9yoFzdQtALGcILSca.
{"copyright_id":"0x6108a6637bf8c53e20c6c641ff3cf184f567ca5e6f4ccc577ee058c88a81fc0f","isrc":"GBCKG0500287","name":"Ya pararan","registered_at":"2026-06-07T09:36:33Z","spotify_id":"0PeEB0KTtlFkwAgtvZpZ0m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108a6637bf8c53e20c6c641ff3cf184f567ca5e6f4ccc577ee058c88a81fc0f. 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/0PeEB0KTtlFkwAgtvZpZ0m.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/0PeEB0KTtlFkwAgtvZpZ0m.
{"copyright_id":"0xb0b7b6f98ca75f77d6abe79999316c467cf6f0332c58c66336d7ce3bbfe21e9f","isrc":"GBCKG0600135","name":"Dame tu Cumbia","registered_at":"2026-06-08T06:16:57Z","spotify_id":"4yncPxzO07B4lWDxDLx8Oh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b7b6f98ca75f77d6abe79999316c467cf6f0332c58c66336d7ce3bbfe21e9f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4yncPxzO07B4lWDxDLx8Oh.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/4yncPxzO07B4lWDxDLx8Oh.
{"copyright_id":"0x08b050d2111deea4321ed2848c35a49b2b2d8a7a0627bf4cfde2f08dac1118f0","isrc":"GBCKG0600139","name":"Vuelve guajiro","registered_at":"2026-06-06T13:24:21Z","spotify_id":"2GMV6rmBO0rR9jY6ZVEOEm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b050d2111deea4321ed2848c35a49b2b2d8a7a0627bf4cfde2f08dac1118f0. 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/2GMV6rmBO0rR9jY6ZVEOEm.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/2GMV6rmBO0rR9jY6ZVEOEm.