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

Block 21850

Hash
000000e68ae1fd532e7ca5639190bc2c6de0feda715b0ab6ffc9049a0f50175c
Confirmations
18760
Time
2026-10-13 08:02:59 UTC
Median time
2026-10-13 07:55:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
878225e4c4c945f8ff99e39a78f154e03ceea822fea6acfb62edc1a9840e2c0f
Previous block
00000113ab32e2aadcfc046773c9c62aed625d5e882e9936f03fdf2c2018f3c3
Next block
000000c0f9376812b8f3a8b029f74b03f4781d7a8029d4a6ba67fe5039e889eb

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 21850 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
cf2812182bc067fb938f23cc7f129483… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
878225e4c4c9…c1a9840e2c0f coinbase1250