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

Block 18472

Hash
000000d81e4ce69f3b75d0b04b7b0f544b472b8c48fd079960371cf7dd3b5f2c
Confirmations
22008
Time
2026-10-09 10:02:40 UTC
Median time
2026-10-09 09:54:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5298bdac0b8a5da649e2b55adb4e04bbe22cf4d321349fbc8173e0174527d64d
Previous block
000000a994ee40b068a305f775642ec1bbf6b926c869712fbd9bb33aab3379c3
Next block
000000e48f0c24e9e79ec96125543f2f8d13c798b2dc89cf5be03bbc1cda2f16

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 18472 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
0d851d0ab0f54767dab5a503219eef47… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5298bdac0b8a…e0174527d64d coinbase1250