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

Block 19943

Hash
000000487319ebafc7dc307d9d16b2b58aaa6172abe8c0289cafeaf3ad77867a
Confirmations
21937
Time
2026-10-11 03:02:58 UTC
Median time
2026-10-11 02:54:38 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6ea6d3a50d61d0caf2da99f705ca11ee829ff722be45b309633841146b5e0953
Previous block
0000006f4fcdf7b7f682d63b73811f47f650eac478474dded3599480a092aefe
Next block
00000117c03cc52aaaf3bc1c4d01325a82040e215a364a799f68ddbb36b8948e

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 19943 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
1eb066323f8f60f4ad8ccc5a7ff1818e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ea6d3a50d61…41146b5e0953 coinbase1250