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

Block 19431

Hash
0000008d79d1c7f7c5d2c4738b8be1d555f34d51d87ec1ae132cb665d15cf1d1
Confirmations
22149
Time
2026-10-10 12:48:07 UTC
Median time
2026-10-10 12:39:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2e9e99dad3478e84c82d8a4dc3694784b77ab50b09391fb284a70588ccf9101a
Previous block
000000b9c5d4ee1fe6d60f8e9c025573804e1080a1f3a5b0deef7f873b6e2d81
Next block
000000766e4dd7d92c0cfbbc25e6f4ff34ca1502819a15d033cce99580ed2664

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 19431 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
bfc5e28aadd29e66a6acf888bffc8c29… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2e9e99dad347…0588ccf9101a coinbase1250