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

Block 21743

Hash
0000005cca8a274d327df5e01381e84ba19ceccff5bc703a9e6098f6dbad4539
Confirmations
19821
Time
2026-10-13 05:05:47 UTC
Median time
2026-10-13 04:57:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
9f98a8ba2296ee4ada07809da2ed561514cbf430c2131ac78826ba8cbf5cd5ba
Previous block
00000136e82ddc3de92884cde66c332304e1282eb05299f24dd41a6623e9b17e
Next block
00000015d10f05ea887cca30c6b2b621b519c031fb924baafa3cc90458c39109

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 21743 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
91645f6162946aeee95ad09237e3d9c3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9f98a8ba2296…ba8cbf5cd5ba coinbase1250