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

Block 19631

Hash
0000000763b4085f78ad904b885ba0fc1c59b08bef1b0b67e71c95c4c14d1d6c
Confirmations
22688
Time
2026-10-10 18:24:43 UTC
Median time
2026-10-10 18:15:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
df3addbc8caae51dcf13bd541d9662e2e63e263a88c92e8eb24fde8901bb6091
Previous block
0000006d4e82413f51473abfe3346226571bc36ec675539fccbb4586c0e2fc6e
Next block
0000008e39bbeca3eaca3eb54473c224ead5f4d35b98b8a37e890e1cb847c3e1

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 19631 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
16792f5696c99d0fd714e4626f4c5e05… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
df3addbc8caa…de8901bb6091 coinbase1250