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

Block 18027

Hash
0000001423e71e96e404c95f81a74b0394ddbf19fa0658fa56a5658a60d68675
Confirmations
23790
Time
2026-10-08 21:33:22 UTC
Median time
2026-10-08 21:25:11 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
3663965a8b213136f67ddf9fbfd4b33be581daef4e72b5ac0ff3cfb9f073a269
Previous block
0000001d137bfc54e2b0810efb4db9885d423de105c39cecdf569a74abcea974
Next block
0000005a3173f5af105210120ff3c4462f6863a1988ef3b4c6ac6150a7c53bdb

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 18027 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
cd82bcdaae1cf7ef8d9f764eb6c0f270… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3663965a8b21…cfb9f073a269 coinbase1250