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

Block 21922

Hash
0000000868ecd75e8f5270f383833516eab47ec97aaf1552c20431b28aa1bfef
Confirmations
19042
Time
2026-10-13 10:04:27 UTC
Median time
2026-10-13 09:56:12 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
8199b9acbe9701f592852594bef77d654a81d51a0ccb89b78f1e19d5a64ef8f5
Previous block
0000007c21abe0c0909112be4bcd9210fdfd885726fd0b1bf806791df3288e43
Next block
00000064085531a0578ab87704092e83dd0f1061a3f48c4c9e3c6e82eece3e59

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 21922 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
7dbac0a7bba612ada2bc345b7a4828b9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8199b9acbe97…19d5a64ef8f5 coinbase1250