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

Block 21564

Hash
0000005f3d3e9d08472f57fe4fecab11cd92a32cf8ddd2e333b12a150cfcfaee
Confirmations
19285
Time
2026-10-13 00:04:37 UTC
Median time
2026-10-12 23:56:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
40f095fae27e5ff1d9dd01cf23983a3336224e46cd88af6fd0b996cc432ed637
Previous block
0000007005822b24f6edf0ca95a91e3e169c36a5b0380e435c15418551a2430a
Next block
0000008d69896b6a82bbf5d984bd57d8b00febf730b8100d7613ed62c9b3e72f

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 21564 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
73b595015f586d4df6c5234b1701f197… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
40f095fae27e…96cc432ed637 coinbase1250