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

Block 18738

Hash
0000011bb1f8e0451b87cdc5434f192a0a29a9f819a99dc261000ba921cbf96a
Confirmations
23574
Time
2026-10-09 17:20:51 UTC
Median time
2026-10-09 17:12:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
54cb7334ed59770c98a2e67c6e8e670c4c3ea1bf9d70ded391bf6eb292dfdbc6
Previous block
0000004f4fb3c82853e641be11fd5e9fc348dd20c09420c3e23915b34c0d69e1
Next block
0000007183af361cef75fe8444177f45bfcfae7f99b43264d7fdbe0341976cf4

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 18738 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
2b3bdf47fce02a121f8783cf79cead97… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
54cb7334ed59…6eb292dfdbc6 coinbase1250