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

Block 18666

Hash
000000ee6e85f96b4d6e6b2a1cc4b7326ea87e3f4e37b30d908e7d6ba66bcfc2
Confirmations
23443
Time
2026-10-09 15:22:34 UTC
Median time
2026-10-09 15:13:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9bec1fdad13b5efd9498da248f068039b5c453bae2cdd63a0bcbb4dcad45d122
Previous block
00000118f99aee7cb312f447202caf49b2fce102c15938bf209a40e8a60594e9
Next block
00000098c3b56b3cfe3380d8d9e2dbd76d3d3df7d6f5e1b606f79ca84d0b6c39

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 18666 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
8891b22058a6e4815140292d76ec216a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9bec1fdad13b…b4dcad45d122 coinbase1250