La putada es que hablo de oídas porque lo he leído en algún lado y ahora no puedo indicar la fuente. Tampoco lo he podido comprobar
Lo he comprobado yo antes de abrir la boca . Esto es con un wallet sin cifrar:
2013-05-18 16:48:49 ThreadRPCServer method=getnewaddress
2013-05-18 16:48:50 keypool added key 103, size=101
2013-05-18 16:48:50 keypool reserve 3
2013-05-18 16:48:50 keypool keep 3
2013-05-18 16:48:50 ThreadRPCServer method=getnewaddress
2013-05-18 16:48:50 keypool added key 104, size=101
2013-05-18 16:48:50 keypool reserve 4
2013-05-18 16:48:50 keypool keep 4
2013-05-18 16:48:51 ThreadRPCServer method=getnewaddress
2013-05-18 16:48:51 keypool added key 105, size=101
2013-05-18 16:48:51 keypool reserve 5
2013-05-18 16:48:51 keypool keep 5
2013-05-18 16:48:51 ThreadRPCServer method=getnewaddress
2013-05-18 16:48:51 keypool added key 106, size=101
2013-05-18 16:48:51 keypool reserve 6
2013-05-18 16:48:51 keypool keep 6
2013-05-18 16:48:51 ThreadRPCServer method=getnewaddress
2013-05-18 16:48:51 keypool added key 107, size=101
2013-05-18 16:48:51 keypool reserve 7
2013-05-18 16:48:52 keypool keep 7
A mí con un wallet cifrado no me la pide, pero a lo mejor es porque yo uso bitcoind:
$ bitcoind getnewaddress
1Lj9Q...
$ bitcoind getnewaddress
1ESSt...
$ bitcoind getnewaddress
1PJGw...
$ bitcoind getnewaddress
1JVDC...
2013-05-19 07:13:51 ThreadRPCServer method=getnewaddress
2013-05-19 07:13:51 keypool reserve 21
2013-05-19 07:13:51 keypool keep 21
2013-05-19 07:13:52 ThreadRPCServer method=getnewaddress
2013-05-19 07:13:52 keypool reserve 22
2013-05-19 07:13:52 keypool keep 22
2013-05-19 07:13:53 ThreadRPCServer method=getnewaddress
2013-05-19 07:13:53 keypool reserve 23
2013-05-19 07:13:53 keypool keep 23
2013-05-19 07:13:54 ThreadRPCServer method=getnewaddress
2013-05-19 07:13:54 keypool reserve 24
2013-05-19 07:13:54 keypool keep 24
Cuando le pongo la contraseña a mano, el pool se rellena automáticamente:
2013-05-19 07:14:02 ThreadRPCServer method=walletpassphrase
2013-05-19 07:14:02 keypool added key 122, size=98
2013-05-19 07:14:02 keypool added key 123, size=99
2013-05-19 07:14:02 keypool added key 124, size=100
2013-05-19 07:14:02 keypool added key 125, size=101
Como es normal, si hago suficientes getnewaddress'es sin meter la contraseña, me va a petar. Ahora mismo no voy a hacerlo aquí, pero he tenido ocasión de verlo en los logs del FlipSide :
[Sun May 5 22:23:09 2013] [warn] create_game: Error: Keypool ran out, please call keypoolrefill first