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

Block 21087

Hash
0000010973778f8973a31a682673d3c3c47e03f80c7ba877799e250fdf34cf85
Confirmations
20099
Time
2026-10-12 10:46:36 UTC
Median time
2026-10-12 10:37:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
162b50c90de59cd0f216b10900d9dcd9787bc1f4ac6d1f5ed771d447f59522a4
Previous block
000000b72190d3b40c53a3485e378cddf07aaaf9f15ebbd2f6fbe27df03a4d14
Next block
00000073da0dd6a0a86ccbf84b83354d8615456f7952745b834156d1ca78b0aa

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 21087 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
3b2f81a66457befab2f1063abb72042d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
162b50c90de5…d447f59522a4 coinbase1250