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 0x9b9f2796abc4fe5b9313be33d97011037b290778030e39a54260be1440a35a5b. 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/813d133b-16ce-4531-b942-1ea9b4a424dc.json and https://artists.proofprofile.net/proofs/artist/813d133b-16ce-4531-b942-1ea9b4a424dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xc406cf8487ba7262046a780fe7b313760272411dd65c925c2e88c46e7ec17ebe. 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/6dNcIpkAfi4XZPBKUyeymP.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/6dNcIpkAfi4XZPBKUyeymP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2600178a4ebd5aacbe15a761ae034090694dfe2a284a50f4a2418b2c10e5fdb. 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/6dHZJSq0Vk3R02GLFOxXN3.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/6dHZJSq0Vk3R02GLFOxXN3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4186a926c990a16174183ffbe4a4e8e8892d9c9562330599d3117852a703d7. 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/1nT05pDTNLrfgyXXNnv9Mn.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/1nT05pDTNLrfgyXXNnv9Mn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3195b930ef099cbb10d9ec177de313a7a2ca6350026280d873922977d86b59df. 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/7f8LeQ5iIRclXZMbWCDhgN.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/7f8LeQ5iIRclXZMbWCDhgN.
Check The Czechs! 70. Léta (Zahraniční Songy V Domácích Verzích)