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

Block 21201

Hash
000000c6aac055a7f3133f251ca82ae57e19150b3657e633051bb80ebb23c7b1
Confirmations
20538
Time
2026-10-12 13:54:34 UTC
Median time
2026-10-12 13:46:37 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
89a1a18a5ab9645d80239064a4739d15ade5f0c5ecd7aa3ca1b6718f62e871f4
Previous block
0000013932042a086b19600ad5ddc50fc4116563f42e06258ec0b57be14c6a2f
Next block
000000a16802dce17d3f98aa30c7fbd72771f91d8e237b579134e5e4c1d06098

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 21201 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
e7079155a6aabebf50ddec9c40b00f07… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
89a1a18a5ab9…718f62e871f4 coinbase1250