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

Block 18858

Hash
000000b89b3298f15d4a3160fa7cf8069396ea28a8f1077de4804aa5e37b14c9
Confirmations
23409
Time
2026-10-09 20:39:49 UTC
Median time
2026-10-09 20:31:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e3300cbf9eb488f3e7293016e5556ae2846b2aa21a196db0d434cb67a2c61991
Previous block
000000302949ffb2387195a2e8821f3a91a198ab78392dce2444ed98569a2644
Next block
0000001b626657bcfbb8dd617d09a21797a8b1e201b6edf32638e4aec7526966

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 18858 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
adf53461e3b4df01f86cb958ccd0c336… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e3300cbf9eb4…cb67a2c61991 coinbase1250