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

Block 18693

Hash
000000c76d819fd10b2162f5ff9f0e9285ff252a0bff3aac694e947ba7dc91e2
Confirmations
22186
Time
2026-10-09 16:06:29 UTC
Median time
2026-10-09 15:58:22 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1d7e4e62fb198fa6681b7f4f2e40e7af33fa9e3a4b6e45b6cbf1a9ec38328d28
Previous block
000000b40cf6b086d51b536a39d28ba37c41e4169099376a36decfd5a8971c40
Next block
0000009752fa50f053bf4285a70fb2da905e978b4f8bc0ad9789ee0345708fff

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 18693 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
14628318c1b65ef3da1137c4325fd596… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1d7e4e62fb19…a9ec38328d28 coinbase1250