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

Block 19999

Hash
000000841874616836f0908d4e6bb2ef8cd55ea0b9323e7084f857d69b2abdb1
Confirmations
21349
Time
2026-10-11 04:39:14 UTC
Median time
2026-10-11 04:30:22 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
35ea9d7e9453c224b10876732d2447cebb0666aad6866d7d70649d3561e13196
Previous block
000000f4b43c589d46a57a13d5c05d63328b3c2371db9e6599ab5a11c82b79fc
Next block
000001153177f182a96b4ad6903ed9279cef82b0cfd340f85b55d1ac81ccc1d4

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 19999 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
70c577efb9a01867297582f3f59ae854… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
35ea9d7e9453…9d3561e13196 coinbase1250