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

Block 19843

Hash
00000016684644946114757b88f93438c70359ae2a5776fc8b1e1b857de49cfe
Confirmations
22455
Time
2026-10-11 00:18:21 UTC
Median time
2026-10-11 00:10:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2f4a80ec3097e8904f30d91d08aee71cca18098f0343753c905b5972a62418da
Previous block
00000077a85cf3b0c1708726a331f4a97ef6c7ec4f14c64e34e7375617c0276e
Next block
000000b75591742f732ef0e81603f5d0f77a0b7d5972503c8550c611c7291c97

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 19843 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
8f164386d7ef11cd29f78e7075073bf5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2f4a80ec3097…5972a62418da coinbase1250