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

Block 22171

Hash
000000b643000413b63401d5cfe45c7cd8549bf8e9755462f7743f969fd66f3b
Confirmations
19916
Time
2026-10-13 17:00:15 UTC
Median time
2026-10-13 16:51:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6ffffa86f0063de22198d9afd7f789cb8391bbb600b1cad7da4ce99e1ede1e1f
Previous block
000000d66d5c048fb63dcd67926b9593bd7837cf4083472e9a1b322cec102922
Next block
0000008486e71166eaa86552c9b8e9af96bedaeb2ea92684c5d1906bca59c2bc

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 22171 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
5c62e6f25c1a60700151b36b766b6658… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ffffa86f006…e99e1ede1e1f coinbase1250