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

Block 19526

Hash
000000a3885d10e0dd9eed51cd0f85e7434924a4ef3ca808568133af1687e6d9
Confirmations
22452
Time
2026-10-10 15:26:50 UTC
Median time
2026-10-10 15:18:18 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
683a86801817431e4b4d6eaace3eb128cbb817a19d2e5454c3ec0c7764cad988
Previous block
000000fd417804ceb3a3dcb1b00c3778472018f7bf49a3fe3fbbd80396cd88d4
Next block
0000003b258645a22818a97a5afff23e48f4b0865d6ff5f5f8d8f864164c976f

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 19526 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
0c08faa31ea3eb4f75b5a30e1c23110d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
683a86801817…0c7764cad988 coinbase1250