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

Block 18216

Hash
000000dfb14e9c248ccd478fb7c9dd33feac4f2a3dc64bbc2931b1829be5020f
Confirmations
23894
Time
2026-10-09 02:52:57 UTC
Median time
2026-10-09 02:44:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
81a7e7ab722c7340d54989a360e96a890b4a7487df2b860b8975f1cc27bb9d17
Previous block
0000001df003fa8eebea37ab29aa8598d25adaff7100392be9eba5e7c3c3b53e
Next block
00000055f27fcc373895530286a37d86e41ecefe811e19db387d3fa2dd629964

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 18216 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
0955cb4a18448dc459b2199067760f2e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
81a7e7ab722c…f1cc27bb9d17 coinbase1250