nl_tokens: 0x40 range - block operations
pl_tokens: function ( runState , cb ) { const number = runState . stack . pop ( ) var blockchain = runState . blockchain var diff = new BN ( runState . block . header . number ) . sub ( number ) // block lookups must be within the past 256 blocks if ( diff . gtn ( 256 ) || diff . lten ( 0 ) ) { runState . stack . push ( <mask> BN ( 0 ) ) cb ( null ) return } blockchain . getBlock ( number , function ( err , block ) { if ( err ) return cb ( err ) const blockHash = new BN ( block . hash ( ) ) runState . stack . push ( blockHash ) cb ( null ) } ) }