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

Block 18807

Hash
0000007bdf69a0f8af6aebfc53c9751c4f3dbc44ee192cff51ee1ea1ff592fae
Confirmations
23621
Time
2026-10-09 19:15:10 UTC
Median time
2026-10-09 19:07:18 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bc358cbb960010a03f96fc0c6b1aac2ee61b964f66af1cc78ee73690ea0fce1d
Previous block
000000f3e90633ef0d545867d3447dfadc6c09e8c804d77ac4840ed3d8af9f6b
Next block
000000726dac12455a0ca084eb8becd15936ddcac5c5b63da7222ecce0787dae

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 18807 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
542143e03e6e009dbc649d9122a5f0ea… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bc358cbb9600…3690ea0fce1d coinbase1250