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

Block 19493

Hash
0000004eb8eb6005aeb257b4b0ed618e850e179f5240912041b459f8991361a3
Confirmations
22752
Time
2026-10-10 14:32:08 UTC
Median time
2026-10-10 14:24:18 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d089a2f8dfbc33e135a28ac52cd88723b75376639ea8d3548b3d5260b5dc6742
Previous block
00000069cfadae31e226daf8e9e121011f7c82b447abe5130f39531779d07c8d
Next block
000000ba0c19dae2d2d0ef7358862a199c64c3a31dce485b1776e69973cf4160

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 19493 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
4c4c0e1815945e756871b1aa838f4ac4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d089a2f8dfbc…5260b5dc6742 coinbase1250