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

Block 18186

Hash
00000069390845da3c3b612f943a857435f80b51344246e90ac8fefd98dd80c8
Confirmations
23007
Time
2026-10-09 02:02:12 UTC
Median time
2026-10-09 01:54:04 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d74ba5f67b87c398eb5ed5c6cb03865d7c51493c1639c612b8e1cdbfdb994dc3
Previous block
000000268ea75725d5b4c1ea360e6408f498600e740086c32613d2873da16867
Next block
000000597d28af5168b58889163d0def9fa9bc01a7ad4b736008718c35ffcb76

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 18186 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
5f3d483afe3e5509ea2107f60ff8412e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d74ba5f67b87…cdbfdb994dc3 coinbase1250