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

Block 18627

Hash
00000014b699cff737e4242c2e076581437aec8d3b7c1ee7582485cb667697c2
Confirmations
22272
Time
2026-10-09 14:18:13 UTC
Median time
2026-10-09 14:10:04 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5664918a817ce3942c769364f340b1d1c40d17ee1c934ab6b9d151a1bb4d090d
Previous block
00000009f53b6a64436c826f7a034a58c31350c238a4b6202307d75ca8ddb1e4
Next block
0000006312ffe5e84b9ee35620ee11354ba40e4b9fba8d8e4cc6fdcd0ace9286

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 18627 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
c9468df7323c00d1f69af8f37fb83829… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5664918a817c…51a1bb4d090d coinbase1250