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

Block 18580

Hash
000000a525e743693d02b42c2d3977ff8d869715dd47536ff5ccf6fb3ef886d0
Confirmations
22377
Time
2026-10-09 13:01:50 UTC
Median time
2026-10-09 12:53:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3f72400e1d1420355de80f7ca7bd7081521edb44480df4df702caf5991e92463
Previous block
00000020c50920aee53696a75f1864d81a43d1cdb7e1745bd32f1854cb23b87b
Next block
000000c1691149597f443b0bc78069e35be64eb3a008d3b2f7012c4bbff582dc

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 18580 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
3ef2209105cc17cd33441bcedee377e0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3f72400e1d14…af5991e92463 coinbase1250