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

Block 19017

Hash
0000010bb5b03bf18ec0782e31ef23e6562402955475803b08469980b3b9f4e6
Confirmations
21922
Time
2026-10-10 01:08:37 UTC
Median time
2026-10-10 01:00:11 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1312fb30ac190cbffe6f53597cc856bbc32ced33553f8c4ce0bfe87ee704a85c
Previous block
000000f3bc9dfe0852cfaa25f9e497b9436ce88509155fc05bafd1b36a583c6b
Next block
00000057647300e12b1bcd38285effc2a8ffb815bf42345021f9950d4b5dc9ac

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 19017 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
ceaa9a8dead2a6d10d5f384571b9c081… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1312fb30ac19…e87ee704a85c coinbase1250