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

Block 18908

Hash
0000004651843eaf8ea24b6c0956e4a1b540a40c5e71193ca4c168b5526653e1
Confirmations
21503
Time
2026-10-09 22:04:37 UTC
Median time
2026-10-09 21:55:35 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
798d37ae7f477412f55986fe71e3de62ca74c94e62496915a99b735df3a8bcc2
Previous block
0000001c8e3d8b818904ea8512ff04eaba228fcf34eec657565f22c193e0591a
Next block
0000007087073ce66d4677de8f15ca308bb006d0040440ada7d1a194ad7f2211

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 18908 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
763414476621e2484828e421ceb63b2d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
798d37ae7f47…735df3a8bcc2 coinbase1250