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

Block 22521

Hash
000000412ff37144c3895cd8130e309e3546200e21c83ad70349981248b77f69
Confirmations
18720
Time
2026-10-14 02:35:32 UTC
Median time
2026-10-14 02:27:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0028309697
Bits
1e01613b
Merkle root
fccc3d961308fec51ea42ec98872247cec5d4545ab214af0381d5f981681b4f4
Previous block
00000013792cefdb002738e870d502e0e931c63356718191b0ccd9fba2c536e7
Next block
00000019fe2e85d0f673941223352e505bbc28e0ad09197e95f591ff67c651e5

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 22521 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
1a3437a3c7004b206e1264426ae926db… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
fccc3d961308…5f981681b4f4 coinbase1250