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

Block 19506

Hash
000000e209a4148d6d250863516b284929eb2c93827d887d4d8f2c6d9bcdf1ab
Confirmations
22642
Time
2026-10-10 14:53:22 UTC
Median time
2026-10-10 14:45:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
665ac1914748bdaed8b44e915d84df89b13d89cc87941a073124e4a3c1d725fb
Previous block
0000009e50cf2bd3b612dd0aff555c5848ae6db69bb5f6a35f6d15f750ee94f0
Next block
00000088747fd4d2b9dbc87414d943bc50f3b94dea693fcfa43079e1d849a5f2

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 19506 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
f2de0ef5fdcefe6dd358eb81f0bc1551… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
665ac1914748…e4a3c1d725fb coinbase1250