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

Block 18181

Hash
0000003c43f877ae2c82cecd2cf108f56e0f97820687d5dc1ec0d5cff3f95e2a
Confirmations
23180
Time
2026-10-09 01:54:04 UTC
Median time
2026-10-09 01:45:22 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a42e92aaf848dbdb682e3c5910e064c3fafb4bfb76f434702a58223f90c78cb4
Previous block
0000009088cac328ca5199863ef2d154a1ad0b701b84003685ca05196baccbab
Next block
000001037c6ea6d9c6539c68f2e4f58b099c0c0c65b6652d26a1f194b94f5819

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 18181 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
555492f95064ddcf60596c11d7305cc9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a42e92aaf848…223f90c78cb4 coinbase1250