七海宗介(CV:増田ゆき)
type: MusicGroup
popularity: 4
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ccb5611eb50f442491fcbe55c0cea1b3bbcb7ce05a057e4bfc1b43eab04e6f7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953961
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953961
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27f3eb2c-1140-4118-97ea-81fe5ea7b549.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27f3eb2c-1140-4118-97ea-81fe5ea7b549.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27f3eb2c-1140-4118-97ea-81fe5ea7b549
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:58:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ccb5611eb50f442491fcbe55c0cea1b3bbcb7ce05a057e4bfc1b43eab04e6f7","name":"七海宗介(CV:増田ゆき)","registered_at":"2026-06-16T03:24:48Z","symbol":"NIM0922280","token_address":"0xea7b3bd8b0988d212fadeef74f4932acc3875f73","type":"artist","uuid":"27f3eb2c-1140-4118-97ea-81fe5ea7b549"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccb5611eb50f442491fcbe55c0cea1b3bbcb7ce05a057e4bfc1b43eab04e6f7. Chain 2 (Bitcoin): anchored in block 953961 (2026-06-16T14:58:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27f3eb2c-1140-4118-97ea-81fe5ea7b549.json and https://artists.proofprofile.net/proofs/artist/27f3eb2c-1140-4118-97ea-81fe5ea7b549.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:58:45Z
  text: {"copyright_id":"0x6ccb5611eb50f442491fcbe55c0cea1b3bbcb7ce05a057e4bfc1b43eab04e6f7","name":"七海宗介(CV:増田ゆき)","registered_at":"2026-06-16T03:24:48Z","symbol":"NIM0922280","token_address":"0xea7b3bd8b0988d212fadeef74f4932acc3875f73","type":"artist","uuid":"27f3eb2c-1140-4118-97ea-81fe5ea7b549"}