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 0xc18bb1b230a1db79eebbac537fe93dc7ab0972e1f00bf7c8ec0b8e8880681763. 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/02a8869a-5235-4883-9a4f-0e4a570e16ce.json and https://artists.proofprofile.net/proofs/artist/02a8869a-5235-4883-9a4f-0e4a570e16ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x94e115b04c4344563d21fa3b6bf68da02fbf754fbf36f37bb16dfcd0110e8667","isrc":"JPPC01713094","name":"拝啓ドッペルゲンガー - Cover","registered_at":"2026-06-29T09:00:03Z","spotify_id":"1brigTk1csgVYw1vqVqqwN","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 0x94e115b04c4344563d21fa3b6bf68da02fbf754fbf36f37bb16dfcd0110e8667. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1brigTk1csgVYw1vqVqqwN.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/1brigTk1csgVYw1vqVqqwN.
{"copyright_id":"0x94e115b04c4344563d21fa3b6bf68da02fbf754fbf36f37bb16dfcd0110e8667","isrc":"JPPC01713094","name":"Dear Doppelganger - Cover","registered_at":"2026-06-29T09:00:03Z","spotify_id":"6Tu1C1tHCGQVjnxFnFh7h9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e115b04c4344563d21fa3b6bf68da02fbf754fbf36f37bb16dfcd0110e8667. 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/6Tu1C1tHCGQVjnxFnFh7h9.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/6Tu1C1tHCGQVjnxFnFh7h9.
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{"copyright_id":"0xd91edea16de941189b190f9d7b8a586ba204a833af8a82b09d29be9481f6147d","isrc":"TCJPS2265904","name":"Motoseito (feat. Soraru)","registered_at":"2026-06-22T05:32:53Z","spotify_id":"2tdOvPEfn604tBM4OSYmHj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91edea16de941189b190f9d7b8a586ba204a833af8a82b09d29be9481f6147d. 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/2tdOvPEfn604tBM4OSYmHj.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/2tdOvPEfn604tBM4OSYmHj.