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

Block 21918

Hash
0000007415217a39628317913317aba1cc4c620530a9b32f88df42f78fa83c74
Confirmations
19279
Time
2026-10-13 09:57:48 UTC
Median time
2026-10-13 09:49:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
171cd828e9d0c23f766ae4d34deee9207d1286b7fa816ddeca74a2fc31bfa3ba
Previous block
000000c9e0ae5e0581b0ec1f77a70616113860eae87828b3241a4e53fdf056f8
Next block
0000000f2255248136dff4b60159f515d618ea05ec4caf733e66df4402e8c38c

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 21918 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
e541ed2955417a923a37092473d4d36c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
171cd828e9d0…a2fc31bfa3ba coinbase1250