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

Block 18440

Hash
0000010e24341a6fb8a7daf33c2e429b4b2b04f233629190cd3fd252026f7a47
Confirmations
21787
Time
2026-10-09 09:09:24 UTC
Median time
2026-10-09 09:01:13 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5063393eaa1448c90dd227d1d85405342deaa26acdcbd7707ed732594975b445
Previous block
000000e2abbc72088fd728bb96848f895788a3e366e2671da3bc61fe18a9d03e
Next block
0000002c3a9915f713ad82a17f6d34f05b00878027933cd8f477040b79ae1117

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 18440 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
c21e478b84dff34aed4795d246d2ed99… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a73b070778f7…a7545c5b67ee coinbase1250.0000031
d3b2767c96d3…f8adfcfb05e1 pays to P2MR1227.99992850.0000031