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

Block 19910

Hash
00000032b1b686e3e297779eed3b1cb575630b60ef78430faf890ad46947fcb7
Confirmations
22241
Time
2026-10-11 02:07:49 UTC
Median time
2026-10-11 01:59:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e10ffb78dc297806b308b9229d35a4eb3fa9789a7e5ae73849ce2b07a40b2605
Previous block
000000f0db28c79d6be92aeada5e01ef620c71de1992718916ce47656f69ba1a
Next block
0000008c2b5d7428f8bff384ba5792331376b42ed616dd6db9875d877536de33

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 19910 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
ccf05f8c01594c1aa8b08e2b4249ac3e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e10ffb78dc29…2b07a40b2605 coinbase1250