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

Block 19659

Hash
0000008758f65787dd5505305db607c69861324bcd133a03160cd1f00fbeccda
Confirmations
22552
Time
2026-10-10 19:11:22 UTC
Median time
2026-10-10 19:02:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f6e7e9870c5d90fb28aab9ea13dd262903c4ac6a17618bd2e03a07efbe4202ca
Previous block
0000008a5f546135387f3c6a24ac27bd3190afb32b0970710a988bc9b0951f35
Next block
000000a7bb00fbcbc2fd4bd7d160b07fe3509e1c0f60cf9ab4b6ece48b0e7bff

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 19659 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
cf57a2a88ab564000d00ad2340695eaf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f6e7e9870c5d…07efbe4202ca coinbase1250