S4-class for BTC addresses, ordinarily created
by a call to createBtcAdr().
privkeycharacter, the private key.
wifcharacter, the WIF.
pubkeycharacter, the 512-bit public key.
pubhashcharacter, the hashed public key.
btcadrcharacter, the BTC address.
mainnetlogical, whether mainnet or testnet.
Bernhard Pfaff
Other BtcAdresses: PrivKey2PubKey,
PrivKey2Wif, PubHash2BtcAdr,
PubKey2PubHash, Wif2PrivKey,
base58CheckDecode,
base58CheckEncode, concatHex,
createBtcAdr,
createPrivateKey, decodeHex,
hash160, hash256,
validBtcAdr