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

Block 19037

Hash
000000ddaab99a0c63ba2c0cf93d68a99b92f786749a49995763cf9a3f14a69f
Confirmations
23038
Time
2026-10-10 01:42:42 UTC
Median time
2026-10-10 01:34:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
699cb6e82afacdd4224b04a3b0da7256ad02c09dcdb5adbfe5c38bfe3d387390
Previous block
000000e543556f8328a085c6024055a6a558dbc4a553a4cd3e2a684e185276d8
Next block
00000025fc967face6d5d89a436cafe042fb8ec49b2e47d3d4720dcbf15bdfb3

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 19037 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
876dcb087d33ef15aa034a98d86b6acf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
699cb6e82afa…8bfe3d387390 coinbase1250