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

Block 21617

Hash
000000f96d38e89a163bd42d624583623a96a075d5f5255127b8772382c3d1b4
Confirmations
19936
Time
2026-10-13 01:34:59 UTC
Median time
2026-10-13 01:26:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
e8c51f3b7647bc9a7203d4678c7cc6b46ed9d5d3934805d3da1fe71b02a506ad
Previous block
000000f105aa9b67cf1c98d5093d9018473df171d766db04457ecad27b90f037
Next block
000000a7a606a5fa84de6f0e6d5e1a6580296bf165c86162036842e3243eeb24

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 21617 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
b94ec25c947e386b58e66e7134d34dcb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e8c51f3b7647…e71b02a506ad coinbase1250