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

Block 18777

Hash
000000461c84fe499e5f864c41c1b9ba839368299545e4a3f6652a0c4d882331
Confirmations
23527
Time
2026-10-09 18:25:37 UTC
Median time
2026-10-09 18:17:30 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8a2d6279995340cb8eb8b20339013d2cd06542e1bc4458d4471b290dc249945e
Previous block
0000005a782df18286ffa467d3a90b2064338239a3d74571b85654e08bb2ba3b
Next block
000000e0eef5e482697c6aeaf305253f0a7c6d042014bfbed4e467afef95ab0a

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 18777 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
214407c7a497533204e06604c00dd2d6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8a2d62799953…290dc249945e coinbase1250