• Improvements and security issues
• Keep PoPs out of the blockchain (done)
• The problem
• Use a non-existing version (ditched)
• Add output to self (ditched)
• Add outputs from T (ditched)
• Set a high nLockTime (done)
• Versioning (done)
• Do transaction checks later in validation (done)
• Transaction malleability
• Remove "PoP" literal from output (done)
• Swap places between nonce and txid
• Change name?
• Change nonce to a byte array (done)
• Change the version to little endian (done)