Big Iron
type: MusicGroup
description: "Big Iron" is a Western ballad song written and performed by Marty Robbins. Originally released as an album track on Gunfighter Ballads and Trail Songs in September 1959, it was released as a single
popularity: 2
followers: 376
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xac3e7506370da00c9e2f02cff97cab90dd38a9b2782f5a4609e02aae0b6c91f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a193576b-cf25-492e-8de2-53961a57181c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a193576b-cf25-492e-8de2-53961a57181c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a193576b-cf25-492e-8de2-53961a57181c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xac3e7506370da00c9e2f02cff97cab90dd38a9b2782f5a4609e02aae0b6c91f8","name":"Big Iron","registered_at":"2026-06-20T05:36:37Z","symbol":"NIM1531614","token_address":"0x4d166653fa7d2dc67fb41e7ba187c9ea4ba3e779","type":"artist","uuid":"a193576b-cf25-492e-8de2-53961a57181c"}
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 0xac3e7506370da00c9e2f02cff97cab90dd38a9b2782f5a4609e02aae0b6c91f8. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a193576b-cf25-492e-8de2-53961a57181c.json and https://artists.proofprofile.net/proofs/artist/a193576b-cf25-492e-8de2-53961a57181c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0xac3e7506370da00c9e2f02cff97cab90dd38a9b2782f5a4609e02aae0b6c91f8","name":"Big Iron","registered_at":"2026-06-20T05:36:37Z","symbol":"NIM1531614","token_address":"0x4d166653fa7d2dc67fb41e7ba187c9ea4ba3e779","type":"artist","uuid":"a193576b-cf25-492e-8de2-53961a57181c"}
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