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

Block 18670

Hash
00000019f095708dfc35c22302fe3e27d4bba8798b5972cfcfe10a97a9bda21d
Confirmations
23396
Time
2026-10-09 15:28:49 UTC
Median time
2026-10-09 15:20:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a4e9331447ad16fa8d37b5c9b982149c93bfc97888459f5ffc65e2069a41d334
Previous block
000000ed1a76f19e2467ef519e5b5d6e69f0e569c57344931a72d1a72988f217
Next block
000000df2e10b210584e61b965119ae73c2642bc93a5b89a580400ca7bd7f159

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 18670 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
75348950e95ee13cc2ad1d6b1d5d6480… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a4e9331447ad…e2069a41d334 coinbase1250