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

Block 19702

Hash
00000082bb22d0cbc9deb6a17239b2b4d65aa0881af22d0445d93d267c45c15b
Confirmations
21946
Time
2026-10-10 20:24:36 UTC
Median time
2026-10-10 20:15:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e8095659fc280f0ad49a33e71f6ae6636dc376f73220e06c6f0466804a8e1d1c
Previous block
000000d7c82f7c18aa469959449f3eefff54da8904378bf407195d3aa8247cae
Next block
00000102aa085adf968265d55b8a5693a68687cacd610ae3bccb7499a50eee18

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 19702 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
28bcdd04161c4140331d0515078ba28f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e8095659fc28…66804a8e1d1c coinbase1250