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

Block 21716

Hash
000000c0475782985410e0df292b199adfda566a1c689de3abc7180d21658ee9
Confirmations
19566
Time
2026-10-13 04:21:14 UTC
Median time
2026-10-13 04:12:47 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ac8ba017dec421877d2173fba56ef64874e04906b8fb9a615227fc51d297445c
Previous block
00000000dab9d8e0cd842d2076bbf1f2ac860e471a391ce6f08866e42be362c4
Next block
0000004490a052f8bc61884fd18b0c105bce484327635889e1d23ac476b1b8e0

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 21716 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
93021bbbed3540c2f8fcc09bc27afcd7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ac8ba017dec4…fc51d297445c coinbase1250