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 0x2dd09890a94016ab6b193848c672c1b204cf7d1560c3e5d05c9ee8e5b0bd4e8a. 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/9ad26459-174b-46e6-b1ae-191dc9b86899.json and https://artists.proofprofile.net/proofs/artist/9ad26459-174b-46e6-b1ae-191dc9b86899.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 0xefbc29d3e1d6071b0def39baf156e90d09b5b3ee1ee95252f0774237c7f5aff1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6XPN67x0uYn0288pPR4Mqu.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/6XPN67x0uYn0288pPR4Mqu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fab692a7d7532947c55fd2154496e7f3ca0fcdf55e5fb206c117e6536f317a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Gkrmi5XKWT5LyqdlOl0OM.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/7Gkrmi5XKWT5LyqdlOl0OM.
{"copyright_id":"0xaf4500c69c718eac61f8a1f8c2908abefef60913b124b8d7c70f49eac3f12b4f","isrc":"ITDF62019534","name":"Dolce & Gabbana","registered_at":"2026-06-29T05:23:50Z","spotify_id":"5wf4YFuAWwgXl8oNCatZ5M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4500c69c718eac61f8a1f8c2908abefef60913b124b8d7c70f49eac3f12b4f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5wf4YFuAWwgXl8oNCatZ5M.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/5wf4YFuAWwgXl8oNCatZ5M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde06d128bbcedde9bd790362d790377d40dbb3b152d7aca02980f4964f6a5c95. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1zu8IroXX44EMeZ1vS8b15.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/1zu8IroXX44EMeZ1vS8b15.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde06d128bbcedde9bd790362d790377d40dbb3b152d7aca02980f4964f6a5c95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0nL4iopFZn1bKsnIsLGpBx.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/0nL4iopFZn1bKsnIsLGpBx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331bff0f85b204d88a6b3ad1f61cc76888c15d05667caf34757e1cde19420675. 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/2uotSqG9SjHmoNlNP4lmZ6.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/2uotSqG9SjHmoNlNP4lmZ6.