Pig Iron
type: MusicGroup
description: thumb|upright=1.1|Pig iron used to manufacture ductile iron Pig iron is an intermediate good used by the iron industry in the production of steel. It is developed by smelting iron ore in a blast furn
popularity: 6
followers: 176
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8303a186f5a7e3aad3e4e58d6d2e359bfeb6fdaaef08afd1d2d86c6db9b7e37
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16ee353e-a83c-4f86-bc09-20a3c4cf44f7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16ee353e-a83c-4f86-bc09-20a3c4cf44f7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16ee353e-a83c-4f86-bc09-20a3c4cf44f7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8303a186f5a7e3aad3e4e58d6d2e359bfeb6fdaaef08afd1d2d86c6db9b7e37","name":"Pig Iron","registered_at":"2026-06-15T21:36:40Z","symbol":"NIM0839160","token_address":"0x4a3dc1169f52266f3716ee4afcc0e4df439e0de8","type":"artist","uuid":"16ee353e-a83c-4f86-bc09-20a3c4cf44f7"}
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 0xe8303a186f5a7e3aad3e4e58d6d2e359bfeb6fdaaef08afd1d2d86c6db9b7e37. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16ee353e-a83c-4f86-bc09-20a3c4cf44f7.json and https://artists.proofprofile.net/proofs/artist/16ee353e-a83c-4f86-bc09-20a3c4cf44f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xe8303a186f5a7e3aad3e4e58d6d2e359bfeb6fdaaef08afd1d2d86c6db9b7e37","name":"Pig Iron","registered_at":"2026-06-15T21:36:40Z","symbol":"NIM0839160","token_address":"0x4a3dc1169f52266f3716ee4afcc0e4df439e0de8","type":"artist","uuid":"16ee353e-a83c-4f86-bc09-20a3c4cf44f7"}
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  type: MusicAlbum
  date published: 2021-09-13
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