Jack Corcoran
type: MusicGroup
description: John H. Corcoran (May 15, 1858 – December 28, 1935), was an American catcher in Major League Baseball who played for the Brooklyn Atlantics during the season. This was his only season in the Majors.
popularity: 2
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e72be7b51df0c31781c3eff9736c25f0a7c2dc8f94fe05971582da3b4b662c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb5f608b-50f6-4627-b291-a94914f27652.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb5f608b-50f6-4627-b291-a94914f27652.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cb5f608b-50f6-4627-b291-a94914f27652
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9e72be7b51df0c31781c3eff9736c25f0a7c2dc8f94fe05971582da3b4b662c7","name":"Jack Corcoran","registered_at":"2026-06-20T23:06:04Z","symbol":"NIM1741896","token_address":"0xcf5f184038c4a885b72adfda34972d76183f8511","type":"artist","uuid":"cb5f608b-50f6-4627-b291-a94914f27652"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e72be7b51df0c31781c3eff9736c25f0a7c2dc8f94fe05971582da3b4b662c7. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb5f608b-50f6-4627-b291-a94914f27652.json and https://artists.proofprofile.net/proofs/artist/cb5f608b-50f6-4627-b291-a94914f27652.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x9e72be7b51df0c31781c3eff9736c25f0a7c2dc8f94fe05971582da3b4b662c7","name":"Jack Corcoran","registered_at":"2026-06-20T23:06:04Z","symbol":"NIM1741896","token_address":"0xcf5f184038c4a885b72adfda34972d76183f8511","type":"artist","uuid":"cb5f608b-50f6-4627-b291-a94914f27652"}
album: Lost at Sea
  type: MusicAlbum
  date published: 2025-02-28