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

Block 19291

Hash
000000eb0bf28ae9b0b06138e3fa575438d6594716ffe854170c4db71f2cea24
Confirmations
21319
Time
2026-10-10 08:51:44 UTC
Median time
2026-10-10 08:42:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
aa1abfcd02c28bd54d0d149aa614c67f45724542f085f6355d01929824e50b59
Previous block
00000096b058053da825449f609886bd2fb7e2ec89ac73e843ca8e86cd5e70ff
Next block
0000002df63b81855efe9fb3d6557cbb946071274e7b12494258b20c46f8b20e

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 19291 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
588a2eadc1c33c27a2087d68610eafc1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
aa1abfcd02c2…929824e50b59 coinbase1250