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

Block 18199

Hash
0000002ba3c3445861ce17fabfb9385852f873b04a9fd9c8e55872d3ed5cacca
Confirmations
23451
Time
2026-10-09 02:24:12 UTC
Median time
2026-10-09 02:14:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
973b5f9866f26c66997dc581859f8091e0b85db7a72cdbc06c46c78f2984a799
Previous block
00000021c03f0971e9ce1295d3d24bc1356f8dbd2ad003b0e96c742d5aa30d1b
Next block
0000007770c6fd794814728c6e0211d630525a4b7e804c88f0f05f3f7b5cb323

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 18199 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
9003838611a6874809a502e3454bcd0e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
973b5f9866f2…c78f2984a799 coinbase1250