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

Block 19263

Hash
0000011181f6f950d1835e9c5995d17dc87a58a2dc5fbc24048fbc0af0ae8a88
Confirmations
21866
Time
2026-10-10 08:05:16 UTC
Median time
2026-10-10 07:57:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
81011e82523113ef30d497edbf8f551be6ea2f387e553bd0390d4a59ae4f8773
Previous block
00000074644b246ecc65607529ebdb96437f0d7b48d53d147bd4706977b275e4
Next block
00000111f2158059cf3b943a9de5e1ce112460de09f71418cf0357f333abd846

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 19263 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
89990efb22d278b37cc025e871bd489d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
81011e825231…4a59ae4f8773 coinbase1250