Testnet4

Testnet4 is the newest public test network, about 150,000 blocks.

Save the settings below as testnet4.cfg and start the node with it:

$ bs -c testnet4.cfg

The store is created in a testnet4 directory under the working directory, apart from any mainnet store.

Without a configuration file, bs -n testnet4 creates a store with the same testnet4 settings in the bitcoin directory. Later runs read the network from that store, so they need neither -n nor a configuration file.

[database]
path = testnet4

[bitcoin]
network = testnet4
bip16_activation_time = 1329264000
bip34_activation_sample = 0
bip34_activation_threshold = 0
bip34_enforcement_threshold = 0
bip34_freeze = 0
bip65_freeze = 0
bip66_freeze = 0
bip9_activation_period = 0
bip9_bit0_start = 4294967295
bip9_bit0_threshold = 0
bip9_bit0_timeout = 0
bip9_bit1_start = 4294967295
bip9_bit1_threshold = 0
bip9_bit1_timeout = 0
bip9_bit2_activation_height = 0
bip9_bit2_speedy_trial = false
bip9_bit2_start = 4294967295
bip9_bit2_threshold = 0
bip9_bit2_timeout = 0
checkpoint = 00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043:0
genesis_block = 0100000000000000000000000000000000000000000000000000000000000000000000004e7b2b9128fe0291db0693af2ae418b767e657cd407e80cb1434221eaea7a07a046f3566ffff001dbb0c78170101000000010000000000000000000000000000000000000000000000000000000000000000ffffffff5504ffff001d01044c4c30332f4d61792f323032342030303030303030303030303030303030303030303165626435386332343439373062336161396437383362623030313031316662653865613865393865303065ffffffff0100f2052a010000002321000000000000000000000000000000000000000000000000000000000000000000ac00000000
milestone = 0000000000d9877342754dea8ec1eb24631517d38e3443c370465ee53a8b7434:150000
minimum_work = 0000000000000000000000000000000000000000000009a0fe15d0177d086304

[forks]
block_storm_patch = true
difficult = false
time_warp_patch = true

[peer]
identifier = 675223068

[wallet]
hd_private_prefix = 70615956
hd_public_prefix = 70617039
p2kh_prefix = 111
p2sh_prefix = 196
silent_prefix = tsp
wif_prefix = 239
witness_prefix = tb

[inbound]
bind = 127.0.0.1:48333

[outbound]
seed = seed.testnet4.bitcoin.sprovoost.nl:48333
seed = seed.testnet4.wiz.biz:48333
connect_batch_size = 10
connections = 50

[node]
maximum_concurrency = 100000

[table.header]
expected = 156456
size = 17835984

[table.txs]
buckets = 150001
size = 604424

[table.tx]
expected = 14810011
size = 9478407

[table.ins]
expected = 33127580
size = 17226342

[table.outs]
expected = 57089349
size = 5138041

[table.input]
size = 87852864

[table.output]
size = 20343818

[table.candidate]
buckets = 150001

[table.confirmed]
buckets = 150001

[table.state]
buckets = 150001

# [table.scan]
# buckets = 150001

• bitcoin.network selects the testnet4 defaults, including the service ports (Ports).
• [bitcoin] replaces the chain parameters, with soft forks active from block 1.
• forks.time_warp_patch enables the testnet4 time warp rule.
• forks.block_storm_patch enables the testnet4 block storm rule.
• forks.difficult = false enables testnet's minimum difficulty blocks.
• peer.identifier is the testnet4 network magic.
• [outbound] replaces the mainnet seeds.
• [wallet] sets the testnet address and key prefixes used by the server (Settings Reference).
• [table.*] sizes the store for the chain at 150,000 blocks.
• [table.scan] is commented out because it enables silent payments (§5.14). Uncomment it to index them.
• node.maximum_concurrency raises the download window, since testnet blocks are small.

Ports#

With bitcoin.network = testnet4, each service listens by default on its mainnet port plus 40,000 (Ports):