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 0x7f85a1b5ea97940cfa49cc80123030660122306e5df5b88d961bc2959e63d9d1. 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/137fd196-4e05-45d9-8248-ab234772716b.json and https://artists.proofprofile.net/proofs/artist/137fd196-4e05-45d9-8248-ab234772716b.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 0x10ca40d28107bd775489b56b5a8d1b1be263322cb057d718279610fe486be7f2. 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/21X9N3nET0D7DT7S37LMvb.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/21X9N3nET0D7DT7S37LMvb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d82bdc8b564beb6863d0261cd0246c4e7550155e836bc6a25cef2509908ee1. 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/2DxJoJp5nPYA68BYFRI1zW.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/2DxJoJp5nPYA68BYFRI1zW.
{"copyright_id":"0xdd0c226ede32f5ee36223275ece45dce113249bc1fc9cd7e24a9242b9f951554","isrc":"FR47Q0706330","name":"Dragon de lune - Live","registered_at":"2026-06-29T02:29:04Z","spotify_id":"4bTLITCGTZuGlJYYfDuV7u","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0c226ede32f5ee36223275ece45dce113249bc1fc9cd7e24a9242b9f951554. 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/4bTLITCGTZuGlJYYfDuV7u.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/4bTLITCGTZuGlJYYfDuV7u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd4da2118a416e3f60b7b3f2e5ec52298d1c6cb035a2b02e992f57c31fa0fe0. 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/7zYf5pvFi1hMSz1HWBi140.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/7zYf5pvFi1hMSz1HWBi140.