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

Block 18061

Hash
000000cf560214918a19e8482f6950d3394a23bf46200a0d66f66af5562ee964
Confirmations
23590
Time
2026-10-08 22:31:37 UTC
Median time
2026-10-08 22:22:31 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
57dd16a78772dde56915278eb8cbea8825dc183f7bbe9314ef77948c7f0b6ff6
Previous block
0000008c07d42197ac4d00c68e212805cd5be0dd8628a18703ac84fd49d11b74
Next block
000000b6a6be7349ef5ea09bbaf197f5527671f34f2a478565f70c7b19312e72

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 18061 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
739da835cd35b38286781b628e59ccf3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
57dd16a78772…948c7f0b6ff6 coinbase1250