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

Block 21989

Hash
000000d929c5cb8ef148fe4b438479d9e50d77f273a878e0f13397ffc281cf50
Confirmations
18762
Time
2026-10-13 11:56:12 UTC
Median time
2026-10-13 11:48:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
8bbe80578296f618df14d890f8833c96d3db49e614bd878224696865c80c6e5e
Previous block
0000010785b4b29de75d29f4320577c5af408386d2bb9d3f0964928f5b9871d5
Next block
0000001e6b54cfbe9166eca1533ce0be149b41bb6d15c6f3fb84a7773cea9167

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 21989 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
6da8e08d4ac65b916ed471b7e6ae96fa… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8bbe80578296…6865c80c6e5e coinbase1250