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

Block 21818

Hash
0000003d1839dd952ee1710907f099b860e481677e9042aa05b7dfb7303447e5
Confirmations
20032
Time
2026-10-13 07:11:06 UTC
Median time
2026-10-13 07:02:55 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
347ae3002115ae186796eebfebf7d05a5310f9fc19e76c04a924a37963106c79
Previous block
0000001107692b50b6aeadd26913734ea4ee12873eca9b4c477d75ea5c3438e9
Next block
000000f12c9974bf5f63f0282e5fe74e8179e92cc59912a8e6a87cff8813711a

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 21818 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
61e90a1ae848368f238f35fd3231ce69… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
347ae3002115…a37963106c79 coinbase1250