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

Block 21634

Hash
000000882940d80db65cfbf4aa9522f335d701cc12c46bb9e469fec82e6bf6bf
Confirmations
20460
Time
2026-10-13 02:03:43 UTC
Median time
2026-10-13 01:54:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c70ca7941637c1b399f488b7d977ce092e2947a600f4948ceff49c91079cee19
Previous block
000000a5509ea825688e787e0f3b90163f5a9d3d8772ff8571003bf2404d7a0b
Next block
000000aff424fc07359092e06adba819b596d6722b9ab86cb010bc9ab64acaf1

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 21634 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
e07d1e26fbf0fbcaa17643e4a3080cbf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c70ca7941637…9c91079cee19 coinbase1250