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

Block 18709

Hash
000000d7b926f6c8f8d1de0d671a1c5288cf5fdb1b45fed30032ff9f6df26faf
Confirmations
22905
Time
2026-10-09 16:33:08 UTC
Median time
2026-10-09 16:24:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bfbf8697fc7de17e104029b6893d9b7ea789bc71d0b1f7d28eb780d0e6a73c38
Previous block
00000104d08c66e19d86343df3605f09340d547d9905e24cf77b0ef93795d0a1
Next block
000000d995f62d1179b2bd9bd9e839d8dcb8bbcb07219b9d98e6785bedf5798c

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 18709 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
c309a74de041099c9725d22835e05889… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bfbf8697fc7d…80d0e6a73c38 coinbase1250