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

Block 21099

Hash
000000f109121c334d6755d83e9dcf3b6f41f655908776aa7327141d5a2fd5c9
Confirmations
20167
Time
2026-10-12 11:05:56 UTC
Median time
2026-10-12 10:57:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6f66a45b39785a0f421320068ef554d3dc1de06127aa6490d4c454220814de50
Previous block
00000118a66cb47ae676683a1908a51c44d87e4258db9327692bf9cc88fc7620
Next block
0000004f13ef1e8a710ab7f697be3a8756a59b2077646a886274477fcbe53121

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 21099 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
6be6087f7f6b4d4a652ea5a95d5e784b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6f66a45b3978…54220814de50 coinbase1250