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

Block 18548

Hash
000000ef39015b91747dc8eef7683e287e4fe6315a8381afd35938dd256c7207
Confirmations
22231
Time
2026-10-09 12:08:45 UTC
Median time
2026-10-09 12:00:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
aadac59ad3778f0e7db3bc66c660595f029d825cce298768063ead3969283c3e
Previous block
000000049748bc7db739162308e2a2bc4bc01d132a5f025c7f44ab434b68bbc2
Next block
0000006c4dec8ab6bb0ffdc5bb41d555b1a88a0c1e1cb994c51f584e4952c9dd

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 18548 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
f1ab235ea277ce01ee94276eda9b737a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
aadac59ad377…ad3969283c3e coinbase1250