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 0xf8062d04406244e87ce5cb88350af3bf80ee93e190411c83fe6a26576ecdd908. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ac5bc7-9feb-49d1-bb9c-b950b8e0cc65.json and https://artists.proofprofile.net/proofs/artist/e7ac5bc7-9feb-49d1-bb9c-b950b8e0cc65.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 0xa4d4e6c9bde181da13973d58bea1e68b4bd639faf0f3ff908460a2acfdabaf1a. 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/3aTvd7MvCeUgUzCJlmHUBc.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/3aTvd7MvCeUgUzCJlmHUBc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717686e70c57d6d81c9187ecd9e3f03ff751cd919b9f552780da1c4e5ecf21ad. 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/76QrSG0HGNoWGVlvku9nhY.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/76QrSG0HGNoWGVlvku9nhY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729bd66ba17aecc4f4130fc33b1665034e089c96d83babefd7934df63956e65a. 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/4NKTswwJlcNzRYffhEIdRe.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/4NKTswwJlcNzRYffhEIdRe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d91c8c697609a19846f65b5b938f7111cdec278793491a506625ac72e89773f. 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/53YlmsD9f4GeTYh1HGphmP.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/53YlmsD9f4GeTYh1HGphmP.
{"copyright_id":"0xeb5c34ccebfc502c6a5014f73baba5c41d1c598680a9c75647d777d3d4d0b54d","isrc":"KRA302000460","name":"To you, Tomorrow","registered_at":"2026-06-29T07:38:37Z","spotify_id":"5FOrl5XXBgdhEodenHXNFG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5c34ccebfc502c6a5014f73baba5c41d1c598680a9c75647d777d3d4d0b54d. 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/5FOrl5XXBgdhEodenHXNFG.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/5FOrl5XXBgdhEodenHXNFG.
约定 (with SIWON, ZHOUMI, RYEOWOOK, KYUHYUN)