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

Block 18843

Hash
0000011884ab579887b3bba6be44256e127e570407731257b69cbf78fae611f0
Confirmations
23497
Time
2026-10-09 20:15:31 UTC
Median time
2026-10-09 20:07:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8aa919115e65f9bfbb236dd7208363b129725da52f979cf1ad1ce69bc7ac1ecf
Previous block
000000c5353dfd8741c49c812cda0b3a208a7a6df070669f107f2be2dc07abd7
Next block
00000079190d9862fb52e98c9b8dedc4b5562d12e5e9d398779e41bca6096ca4

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 18843 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
3b99e2549f4593cdb45f956a233497e4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8aa919115e65…e69bc7ac1ecf coinbase1250