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

Block 18591

Hash
00000064bf14ad0caff3c193912333d1feaeeb603d847d230d960597e47a336f
Confirmations
21697
Time
2026-10-09 13:19:02 UTC
Median time
2026-10-09 13:11:10 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
45fc0a46b187929768c015f9db46619c30200a7dbe15e493ed77ef3ac8ae452f
Previous block
000000df56c0db381b92517cb5a2408fd8c039b54a41782ab153f964602a9cec
Next block
0000006be6a59f6af530793e2717d8a7560114dd6a6bc07f2f3bf0c3fca63b41

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 18591 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
3ced1cba6dc5a606feb0d8716465bf95… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
55c64b13d60f…95d6b1cc404d coinbase1250.0000031
72c428c438ae…3574618672c1 pays to P2MR122.9998510.0000031