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

Block 18476

Hash
000000c546fb4304d7a293311df2d8145f710ed90724ec7a204fc2bae44abcbe
Confirmations
22273
Time
2026-10-09 10:09:04 UTC
Median time
2026-10-09 10:01:06 UTC
Transactions
2
Size
2,991
Weight
11,445
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ab6786921cdd143710fc75bcccb7e3683a192818ce1a4ad0baf2e90a5a1a6887
Previous block
00000106a2e8598d440ff10f06c86ff3923cf28dc23eb75e4a94b7de5325b919
Next block
0000001358783b469f146b35722305df1da364b925a604ffd4e127f0f724e6bb

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 18476 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
d3d7ef5dcfa711ad088bde12edfccd21… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2097aad85063…c3ce94f826c2 coinbase1250.0000117
156d9d7440c6…def6a886aa62 spends P2MR110.00998830.0000117