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

Block 18153

Hash
000000ce5f9a0c0d489b21c829473ba144dadb5ad0898c7ea4d25bec897bba73
Confirmations
23638
Time
2026-10-09 01:06:13 UTC
Median time
2026-10-09 00:58:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
16c043f3a4f44682de91f784abd8ec8b71ec7565a4bf534b8e7d6e91ede036dd
Previous block
0000006560de0047fc60ae2721c7741a3882b42cec318990fe9e248f85b951d4
Next block
0000003808b8be65160e143b312abee9df98392cd5e700dec9527bf51dcc9cf2

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 18153 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
34453e782930d8d0246bb1870d82a617… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
16c043f3a4f4…6e91ede036dd coinbase1250