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

Block 18812

Hash
000000f7bb5e21cbb54a0d0ef72933b7aedf608d397357226810a6757a2af44d
Confirmations
23632
Time
2026-10-09 19:23:32 UTC
Median time
2026-10-09 19:15:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
94bef821cde01678fc9f35deeddbb66a2eede23cceb48d784e884d1d6410985f
Previous block
000000452982f9d101e17aa2a864bfcbf85e8d476e9a896c35922c45e7901415
Next block
0000010f43fc3e13b7fbdb46b236ef9380a8304961f0f7a3d62c62baa6ff56e3

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 18812 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
1537c3acb0c47a7ce5504deab5d141be… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
94bef821cde0…4d1d6410985f coinbase1250