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

Block 21858

Hash
000000fdcd9f033e81b17be82f7522cc292da3af80dcc044372f908eeba6b920
Confirmations
19240
Time
2026-10-13 08:16:14 UTC
Median time
2026-10-13 08:08:00 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
18376090aa021e0da90bcc17da7354641670dedf0a374252e51a764fc662f884
Previous block
0000002478b65397d2f1aa660b9fa8a2cedccfba97bdfc30750c2aaf2bc70421
Next block
0000002d3e0df095b2936b90c71f8263505999656cb1a804d8146486a1c1c176

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 21858 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
c468d4ccd482777d4d4f40c2a052530a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
18376090aa02…764fc662f884 coinbase1250