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

Block 19665

Hash
000000a3e02f9ce5632dbc437c346a03c9c3700ec4d5b5b3d21ec3f7225555a6
Confirmations
22525
Time
2026-10-10 19:22:11 UTC
Median time
2026-10-10 19:12:54 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ceabc337ed8aa0b209ef824e38ee7887d3a47330f9d1815d501e21527eb6af58
Previous block
000000d372667fcfaf4cddd57150548815472292affd5ff4318625865e322596
Next block
000000d45fb194e33c7dd5edfafff212948a6c45bc81e2e4ef52d7c8e2ddb77c

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 19665 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
7afadc413275e007689da4a46a7affac… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ceabc337ed8a…21527eb6af58 coinbase1250