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

Block 21987

Hash
00000110a0851cdcde754136eb5ce4e6f2fe326b974c9808be0d4189977ca26b
Confirmations
18883
Time
2026-10-13 11:53:05 UTC
Median time
2026-10-13 11:44:39 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
3729c86678356313339c030ceedb9d548a4d87c9c2ea766187ff2aa231344566
Previous block
0000006699525f3cd6e1dcbd03c4a1a5f6fd2157c9bbcbb6fcfc947d233ac623
Next block
0000010785b4b29de75d29f4320577c5af408386d2bb9d3f0964928f5b9871d5

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 21987 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
773626d536421318dd30548ef6f00dbd… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3729c8667835…2aa231344566 coinbase1250