Not my department.
But I would think via privkey maybe. Privkey begins/ends with an X.. node type A, with a Y... node type B - or something like that? The flags could be embedded in there somehow.
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2015-06-22 20:56:47 CheckBlock() : Skipping banknode payment check - nHeight 142853 Hash 000013d38b9b8113d09df32322704331a0a35fbb7e711873b6347fe5e6651912
2015-06-22 20:56:47 No coin database inconsistencies in last 289 blocks (290 transactions)
2015-06-22 20:56:47 block index 777ms
2015-06-22 20:56:47 init message: Portemonnee aan het laden...
2015-06-22 20:56:47 nFileVersion = 301608
2015-06-22 20:56:47 Keys: 2 plaintext, 0 encrypted, 2 w/ metadata, 2 total
2015-06-22 20:56:47 wallet 2ms
2015-06-22 20:56:47 init message: Loading banknode cache...
2015-06-22 20:56:47 ERROR: Read : Failed to open file X:\Encrypted-container\BCRCoinData\mncache.dat
2015-06-22 20:56:47 Missing banknode cache file - mncache.dat, will try to recreate
2015-06-22 20:56:47 Locking Banknodes:
2015-06-22 20:56:47 fLiteMode 0
2015-06-22 20:56:47 nInstantXDepth 5
2015-06-22 20:56:47 Darksend rounds 2
2015-06-22 20:56:47 Anonymize Bitcredit Amount 10000
2015-06-22 20:56:48 RandAddSeedPerfmon: 298608 bytes
2015-06-22 20:56:48 mapBlockIndex.size() = 142853
2015-06-22 20:56:48 nBestHeight = 142852
2015-06-22 20:56:48 setKeyPool.size() = 1
2015-06-22 20:56:48 mapWallet.size() = 0
2015-06-22 20:56:48 mapAddressBook.size() = 1
2015-06-22 20:56:48 init message: Adressen aan het laden...
2015-06-22 20:56:48 Loaded 5 addresses from peers.dat 0ms
2015-06-22 20:56:48 Added connection peer=0
2015-06-22 20:56:48 dnsseed thread start
2015-06-22 20:56:48 net thread start
2015-06-22 20:56:48 addcon thread start
2015-06-22 20:56:48 opencon thread start
2015-06-22 20:56:48 msghand thread start
2015-06-22 20:56:48 init message: Klaar met laden
2015-06-22 20:56:48 dumpaddr thread start
2015-06-22 20:56:48 GUI: initializeResult : Initialization result: 1
2015-06-22 20:56:48 GUI: PaymentServer::LoadRootCAs : Loaded 0 root certificates
2015-06-22 20:56:48 GUI: TransactionTablePriv::refreshWallet
2015-06-22 20:56:50 trying connection 198.52.160.64:8877 lastseen=32.4hrs
2015-06-22 20:56:47 CheckBlock() : Skipping banknode payment check - nHeight 142853 Hash 000013d38b9b8113d09df32322704331a0a35fbb7e711873b6347fe5e6651912
2015-06-22 20:56:47 No coin database inconsistencies in last 289 blocks (290 transactions)
2015-06-22 20:56:47 block index 777ms
2015-06-22 20:56:47 init message: Portemonnee aan het laden...
2015-06-22 20:56:47 nFileVersion = 301608
2015-06-22 20:56:47 Keys: 2 plaintext, 0 encrypted, 2 w/ metadata, 2 total
2015-06-22 20:56:47 wallet 2ms
2015-06-22 20:56:47 init message: Loading banknode cache...
2015-06-22 20:56:47 ERROR: Read : Failed to open file X:\Encrypted-container\BCRCoinData\mncache.dat
2015-06-22 20:56:47 Missing banknode cache file - mncache.dat, will try to recreate
2015-06-22 20:56:47 Locking Banknodes:
2015-06-22 20:56:47 fLiteMode 0
2015-06-22 20:56:47 nInstantXDepth 5
2015-06-22 20:56:47 Darksend rounds 2
2015-06-22 20:56:47 Anonymize Bitcredit Amount 10000
2015-06-22 20:56:48 RandAddSeedPerfmon: 298608 bytes
2015-06-22 20:56:48 mapBlockIndex.size() = 142853
2015-06-22 20:56:48 nBestHeight = 142852
2015-06-22 20:56:48 setKeyPool.size() = 1
2015-06-22 20:56:48 mapWallet.size() = 0
2015-06-22 20:56:48 mapAddressBook.size() = 1
2015-06-22 20:56:48 init message: Adressen aan het laden...
2015-06-22 20:56:48 Loaded 5 addresses from peers.dat 0ms
2015-06-22 20:56:48 Added connection peer=0
2015-06-22 20:56:48 dnsseed thread start
2015-06-22 20:56:48 net thread start
2015-06-22 20:56:48 addcon thread start
2015-06-22 20:56:48 opencon thread start
2015-06-22 20:56:48 msghand thread start
2015-06-22 20:56:48 init message: Klaar met laden
2015-06-22 20:56:48 dumpaddr thread start
2015-06-22 20:56:48 GUI: initializeResult : Initialization result: 1
2015-06-22 20:56:48 GUI: PaymentServer::LoadRootCAs : Loaded 0 root certificates
2015-06-22 20:56:48 GUI: TransactionTablePriv::refreshWallet
2015-06-22 20:56:50 trying connection 198.52.160.64:8877 lastseen=32.4hrs