Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 18708

Hash
00000104d08c66e19d86343df3605f09340d547d9905e24cf77b0ef93795d0a1
Confirmations
22875
Time
2026-10-09 16:31:19 UTC
Median time
2026-10-09 16:22:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5bd59d8eac864635269e4c94fa4fc5967a744afb996ea0c5c59dfc6ab392bf19
Previous block
0000006422b3e6124e9e5e9f2cd51347769aafc92b3004394c2a969d79b03ba8
Next block
000000d7b926f6c8f8d1de0d671a1c5288cf5fdb1b45fed30032ff9f6df26faf

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 18708 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
a705dff69a6f4522a8f24320e456c0b4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5bd59d8eac86…fc6ab392bf19 coinbase1250