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

Block 18706

Hash
000000d55e53b8e211c760eecc4193e42650797c31eff6d7a3b1e92f245e080a
Confirmations
22846
Time
2026-10-09 16:27:31 UTC
Median time
2026-10-09 16:19:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b162d85c488ff8852520e96bf5a30b20078e942971c79c1c72210d3836e5090f
Previous block
000000f929c2ef0ddce25471c11b7f445bb328cdcd73b0094c9ea9d5f866a7e0
Next block
0000006422b3e6124e9e5e9f2cd51347769aafc92b3004394c2a969d79b03ba8

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 18706 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
08a791c926977231ce3847d3f1082074… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b162d85c488f…0d3836e5090f coinbase1250