Second City Sin
type: MusicGroup
popularity: 3
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90f83bd2460e1d3c6c6c925b508780f0cd4d3da8ee4e5b323ecbd972bead1eb1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41f58fb9-557f-4cc9-b851-78fd630c3c09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41f58fb9-557f-4cc9-b851-78fd630c3c09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41f58fb9-557f-4cc9-b851-78fd630c3c09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90f83bd2460e1d3c6c6c925b508780f0cd4d3da8ee4e5b323ecbd972bead1eb1","name":"Second City Sin","registered_at":"2026-06-16T12:35:41Z","symbol":"NIM1053789","token_address":"0x7383538ba44f579a838c3f6d83256d5469ef6ce5","type":"artist","uuid":"41f58fb9-557f-4cc9-b851-78fd630c3c09"}
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 0x90f83bd2460e1d3c6c6c925b508780f0cd4d3da8ee4e5b323ecbd972bead1eb1. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41f58fb9-557f-4cc9-b851-78fd630c3c09.json and https://artists.proofprofile.net/proofs/artist/41f58fb9-557f-4cc9-b851-78fd630c3c09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0x90f83bd2460e1d3c6c6c925b508780f0cd4d3da8ee4e5b323ecbd972bead1eb1","name":"Second City Sin","registered_at":"2026-06-16T12:35:41Z","symbol":"NIM1053789","token_address":"0x7383538ba44f579a838c3f6d83256d5469ef6ce5","type":"artist","uuid":"41f58fb9-557f-4cc9-b851-78fd630c3c09"}
album: Under The Landslide
  type: MusicAlbum
  date published: 2024-09-27
album: Morose
  type: MusicAlbum
  date published: 2025-02-14