Chris McMahon
type: MusicGroup
description: Christopher James McMahon (born February 4, 1999) is an American professional baseball pitcher who is a free agent. Amateur career McMahon attended Rustin High School in West Chester, Pennsylvania, w
popularity: 2
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3ee6631b98bd4368465f89756ab7d81c621ea5ca2eaca35fbb51506a2bed06b6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953911
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953911
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:03:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3ee6631b98bd4368465f89756ab7d81c621ea5ca2eaca35fbb51506a2bed06b6","name":"Chris McMahon","registered_at":"2026-06-15T22:14:35Z","symbol":"NIM0848194","token_address":"0x9d4cbbb5e91c706a1578ba27da65a7f5426ac3c1","type":"artist","uuid":"18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a"}
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 0x3ee6631b98bd4368465f89756ab7d81c621ea5ca2eaca35fbb51506a2bed06b6. Chain 2 (Bitcoin): anchored in block 953911 (2026-06-16T08:03:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a.json and https://artists.proofprofile.net/proofs/artist/18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:03:10Z
  text: {"copyright_id":"0x3ee6631b98bd4368465f89756ab7d81c621ea5ca2eaca35fbb51506a2bed06b6","name":"Chris McMahon","registered_at":"2026-06-15T22:14:35Z","symbol":"NIM0848194","token_address":"0x9d4cbbb5e91c706a1578ba27da65a7f5426ac3c1","type":"artist","uuid":"18f61a1d-dc14-4ec7-b0a7-e9653fda0c9a"}