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

Block 21729

Hash
0000006fca2c7161d738fabfcd4c70776c7bebee172ad0965e5e127d7f771b01
Confirmations
20119
Time
2026-10-13 04:42:58 UTC
Median time
2026-10-13 04:34:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
71cb27204816c7d948cb2a27d9f2d1c6e4650de4974f9183483b18d14365452f
Previous block
000000843016a40bc1251fb929f87f9a41896aed90dcec5785612da45581e7b6
Next block
000000d9fe4c2812a44702740812cf2c25dad5dd9c8099ceac3fd8b46095a64c

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 21729 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
a43326244046dded82dbb04dac4591b7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
71cb27204816…18d14365452f coinbase1250