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

Block 18820

Hash
000000306267c8e6d84455f61e04d1960f0f3f291efd888054fa737d951b69f8
Confirmations
23614
Time
2026-10-09 19:37:00 UTC
Median time
2026-10-09 19:29:03 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
887c1fbf7b3a638171fb1b50de887fa7c5985e03fc9b50b93a86783b027765ca
Previous block
0000004bac63d03f306bb26125e36905231fb12bf6a2e092e06574e2942e3350
Next block
000000d4acaf4e1e9b4a898e0a41875ab33384a36ef92c4937ca53fb888c2079

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 18820 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
5af24cbbeddbd9a79b188d7c2cda739c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
887c1fbf7b3a…783b027765ca coinbase1250