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

Block 19869

Hash
0000003983f47438257adce10ad8e01d68bd7e7d063f5fa05f26e170f7ce82da
Confirmations
22360
Time
2026-10-11 01:01:07 UTC
Median time
2026-10-11 00:52:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c479f76574d5f5ff0e007889284e0778d7376a2e636f1f2361dd443879e98a7e
Previous block
000000dbf49ce005c8c7c73be57589122c295a82335f1801b1d3081249c20f3f
Next block
00000025e5f102e9df7f4b1c4f2373b4e3fd721318a59889852c7908819de9a5

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 19869 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
d12225d3c5abe5dedb1e1f44dfefe4e8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c479f76574d5…443879e98a7e coinbase1250