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

Block 18015

Hash
0000003ebf20d9c6eca6b7ac226295df7bba995f788398f2b6d420903f3be059
Confirmations
24106
Time
2026-10-08 21:13:38 UTC
Median time
2026-10-08 21:04:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
0a61fb62f06af5d69a9be0c08f4df3d623d17cc2a887c42e6b839d0354b6c48c
Previous block
0000008b4560f43af6f336a88bc397191b345d42d263b7029538d1be6f6b2d41
Next block
0000001e01b412435351bc55bddf0279dfe3972ab6c0c2e42c57af8f4e3246ee

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 18015 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
a77de3ab871372e567a60339fe6ca1a5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0a61fb62f06a…9d0354b6c48c coinbase1250