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

Block 21055

Hash
0000001f4e6c5be1feee6eae3a99f90246cd20cfe50f170aa6a2a3c3557cecad
Confirmations
20166
Time
2026-10-12 09:53:15 UTC
Median time
2026-10-12 09:44:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
fa3bf1754303e4a3b73386cccce552378120eda39496d829ac8b089fcdee050f
Previous block
0000011780ad6ee5f5477deb671d4cc3958d9ae2a482a86b6789e9b6e6d80150
Next block
0000000db7ebfc7a8c742c9ab9293b12ee82183e138417b0cf5f2afc1afc34dd

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 21055 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
0331505080d86eaee63736391c152e02… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
fa3bf1754303…089fcdee050f coinbase1250