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

Block 21667

Hash
00000062b4627db1ac7fe76f393264be4d494fda02118d75553be44c23d15c90
Confirmations
20325
Time
2026-10-13 03:00:14 UTC
Median time
2026-10-13 02:51:44 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
15b8a2d8453b182cd01b3b769ff57f492944b95701286abf7b047ac2740ec070
Previous block
00000066885cc35f354c4c70483e67f030c274cc0505a072188f7b5939f06be1
Next block
0000009c34c1c06f305c50c8f034f57f6fad049d633e1618e822cddcc92605bd

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 21667 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
ba3984940e41e8f092452521c8bdd33b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
15b8a2d8453b…7ac2740ec070 coinbase1250