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

Block 18877

Hash
000000d10e5000c6f5a83f1e75d3e82937a25ab9d3d441bcaa4b51b984df7943
Confirmations
23214
Time
2026-10-09 21:11:38 UTC
Median time
2026-10-09 21:02:59 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2ac05c4eb84f9e5498b407f31342cc6b5e7f03e951f5a7b02f849e109b9927a6
Previous block
00000078e6270d383680ee2fd085dbd31355b37f0fb607a9a9f3f407cd651bff
Next block
0000006306333dfd358cfe4182c2c001414631d0682bc224e5cdc6495b0dde18

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 18877 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
06fe61adc3e4d780985ab10f81faeb3e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2ac05c4eb84f…9e109b9927a6 coinbase1250