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

Block 21591

Hash
000000792c80f6ed9e8db58e05312738777dad7d2da5701ad70a04cb61b950f4
Confirmations
19291
Time
2026-10-13 00:50:52 UTC
Median time
2026-10-13 00:41:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
28281f027b0d6bed2170e1ff1178675c710b209677ba38981d72fb6564c29176
Previous block
000000677bcedfc27fa625aa6e72c302cb269ac8c1cb24d790903e2de9a4d8cb
Next block
000000b4236f1a3fa10bc6c55e69db66304e55f0e63120f4df0cea27eb227ea0

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 21591 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
0c75f7dcca68eeeaa7a30e634b8fcc8e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
28281f027b0d…fb6564c29176 coinbase1250