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

Block 21662

Hash
00000018e5124e85874480df10a5ab30fd683363c42b267b73c9ae1a3a82aabb
Confirmations
20442
Time
2026-10-13 02:51:44 UTC
Median time
2026-10-13 02:42:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6ceac1d413c1f26117c9171f4d00a6ac8ddc903dd0e424063ce5f5ecc4eeb222
Previous block
0000009ee410126c116a835d5ccbaa397eda74a6aadf1c3e4b7059cf9a939a14
Next block
0000009b764593aeac7375e7b0668edca6b8488e2004c04f783f238fb452ad9a

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 21662 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
6cb398d9cb688f82c9b4902e6bf42380… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ceac1d413c1…f5ecc4eeb222 coinbase1250