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

Block 18685

Hash
0000010cdc57c6fbb0db9849324b4e81bfbfe255357b42ad0edcacf67bf27764
Confirmations
22642
Time
2026-10-09 15:53:40 UTC
Median time
2026-10-09 15:45:15 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
70ea83a39925a1ffcdfd812e105b384f41c6a9807ff494a67c1797c81322111c
Previous block
000000ebc111074c6c606c736e7fcf3278571f19cb8d0ef29e1f4c2fb7b09dc9
Next block
000000714def4a060457f267918c8d40024fc410b6aa0c2b5969f5fc94d80ed9

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 18685 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
e1990f4f43fc1383bed08e0179099e8d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
70ea83a39925…97c81322111c coinbase1250