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

Block 19355

Hash
00000079f5cbcec97dfe8ca87aa4c798d60bc25cd8650cf003c744e7552fa558
Confirmations
22178
Time
2026-10-10 10:41:13 UTC
Median time
2026-10-10 10:32:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7886e896cb356c02576b6dc303b8bba0853e2195defca6d5ebca4cb235293e6a
Previous block
00000039a45da643ccdb2f01b6038b68b9870942b2a0b940f0134862b497014d
Next block
00000042b83c3af371c872bfdb686dad8ba6ef14b1eb723ada9d3dd9d227f303

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 19355 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
a2ee48790297f7f4c3b0cd285e609a06… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7886e896cb35…4cb235293e6a coinbase1250