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

Block 21171

Hash
000000243038ae358f822405000408190a0628a673d5cba5fea9875f127b762b
Confirmations
20132
Time
2026-10-12 13:05:19 UTC
Median time
2026-10-12 12:57:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
8df1ccabd89f25d18c9ef2bbd251990b6ac0b95a79781f7c358e0a80ba6e782e
Previous block
0000008a4aee50205d8c8f911378869a2688753b7b9914c0ee7dec901c8f14bb
Next block
0000001f82f1a1d6337b433f16246f97982e3814d77b4f8b3a69006fb9bd5177

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 21171 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
4d30b386ac7381e988b1008696a77b0b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8df1ccabd89f…0a80ba6e782e coinbase1250