This function validates objects of S4-class
BTCADR. Hereby, checks are conducted
with respect to the first character of the addresses;
their consistency with the net version and
the correspondence of the checksums.
validBtcAdr(object)BTCADR object
Bernhard Pfaff
Other BchAdresses:
BCHADR-class,
BTCADR-class,
PubHash2BchAdr(),
PubKey2PubHash(),
base58CheckDecode(),
base58CheckEncode(),
concatHex(),
decodeHex(),
hash160(),
hash256(),
validBchAdr()