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

Block 19509

Hash
00000003b265f50741ec0d2d095da08ae8cd919f17e69ba16bd3a365e4ca3ea3
Confirmations
22634
Time
2026-10-10 14:58:07 UTC
Median time
2026-10-10 14:50:01 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a50fb8d8f146543f603876a25879f2504fabcf9bddcdb84bbf16d45fb8608af9
Previous block
000000ccdf952879c737c024bf1862f7c910c573e315dc3e2eaf1b790adcf4aa
Next block
0000003e9d30243da8fbe42f83382e6661cf383810a016246cd192205c797a56

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 19509 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
8f75f84b5deae81dd3c9b95b372689a1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a50fb8d8f146…d45fb8608af9 coinbase1250