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

Block 18073

Hash
00000068168cd6493cf2fdc8aebfb929438e29443b6dabf093031d74a042bff9
Confirmations
24021
Time
2026-10-08 22:51:19 UTC
Median time
2026-10-08 22:43:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
654d6ef74ecc1b1bdde679547318bae5504ccf7d609a68e076b90edd26b94d7c
Previous block
000000269abc1afdf8df96ae4d98376cc5cc5d1b5ec3880ff8969fd05c9eecf5
Next block
0000008296212b868d9f8d0dd6308a328818dadb973be09cca2e8c2a3ade8f26

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 18073 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
5fca97dd977c76daa343e7d158c30642… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
654d6ef74ecc…0edd26b94d7c coinbase1250