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

Block 21622

Hash
0000013acee03408aea8628109abfa7899690ede1934283d56f97701c0efa5c4
Confirmations
20086
Time
2026-10-13 01:43:14 UTC
Median time
2026-10-13 01:34:59 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
5b3d1598d0ab08eca968c9ba54af9344fbe1dbe63d22c7b564e46c3124a2cb8d
Previous block
000000603e3ce2a5c3d6a1d7d4bf054dedd5344e11a9b8e8d12bb2828aa97b46
Next block
000001265dc9fdafefc1e108867f2a2fa6a329fe67afb4a2088d914627356dad

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 21622 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
52a88d1c4284fc5ef0ba946aaa6ddac6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5b3d1598d0ab…6c3124a2cb8d coinbase1250