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

Block 18007

Hash
000000ba2fddddc5ad6fa0521a4d5e7e7668fa8a9676689e831b525f3b590769
Confirmations
24143
Time
2026-10-08 20:59:52 UTC
Median time
2026-10-08 20:51:24 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
c3f73a4b2070c78a84375d7241658300a784138bb21f99f3a507f6fde7a5b5e3
Previous block
0000005bf5c3b4113a55f21caaefc0aeeb208a2c65996a7080c12f2f8c347fea
Next block
000000514166517524079c1c98650c7f0630a13b5b74078aeab0125f54b1ceed

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 18007 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
49608f9d65b95ed91ad3c04e0f4d784b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c3f73a4b2070…f6fde7a5b5e3 coinbase1250