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

Block 19311

Hash
00000027ec9b815df8ee7cc74151c6d6bd2af84953d7f2a645746584352b99bd
Confirmations
21380
Time
2026-10-10 09:26:43 UTC
Median time
2026-10-10 09:18:38 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9eeb7f578bceb2fd7a6d76c7af3493d8a4918de4406e27d44f6100ca92dca637
Previous block
00000002171e79bb413ae8611f356cb35de995347678f3884042437ac0ba6d1c
Next block
0000009ae8a20a146a2cd126f690ad0f4ff0b6aed02ac3b742ddd29632bb03b8

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 19311 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
88b8ffc054baddaa00607fed3cbf5306… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9eeb7f578bce…00ca92dca637 coinbase1250