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

Block 18938

Hash
0000001e6e004989c43e9e2ba4c09aca033634ae1721116eefe3c55ffcffd4c2
Confirmations
22025
Time
2026-10-09 22:55:08 UTC
Median time
2026-10-09 22:46:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1d3feca550e0b3059e140fd335914c74b69738e4058b9bd4a71848ee2c2a4c48
Previous block
000000bddf251b405ce0418c147183271265f17c3c88d35d3c2bda854ea0c031
Next block
000000f984bb4fdc2263cb46d1faef4e45e8b7e28c813fcdac8276c48e41366f

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 18938 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
5c6ba368be71db443202c007fb995ecf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1d3feca550e0…48ee2c2a4c48 coinbase1250