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

Block 22221

Hash
00000083768389efd296647ecf8cd62e6483666ed3729b3af6f4842acdf9743a
Confirmations
20082
Time
2026-10-13 18:21:34 UTC
Median time
2026-10-13 18:13:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0028309697
Bits
1e01613b
Merkle root
63b37e104aac4ce2879501a0c18db6a3d4162d95aaa1b38990ebdda915c4537d
Previous block
0000008ae0d859306c8293e5ce786741d7a7285b79abae07ebcca620b8539b99
Next block
0000002dbf82084194b6db854336cb816eb204da0ceeb6dd6174b1c86f35029d

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 22221 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
fc2b6421106b4fcd61f37b40469f524a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
63b37e104aac…dda915c4537d coinbase1250