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

Block 18831

Hash
000000f49284712ba406a9443847d749e308bf4d3608e8556dd6a3c3e2ffee47
Confirmations
23560
Time
2026-10-09 19:55:54 UTC
Median time
2026-10-09 19:47:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f4be75d4645b5198c94bf0e39b20826cb89b256b8502ee2c01230f16e644d9c1
Previous block
000000da3a16904862cfa24856100f395ed040184badc12e8afa128e4d501b64
Next block
00000031eb8eb56d9ff804280ff3e97e04e7a297fc5e7c3ecd602c1362ab4408

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 18831 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
3307e44569aed4d1cd9dc38b43239b0c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f4be75d4645b…0f16e644d9c1 coinbase1250