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

Block 18371

Hash
000000ec73a574eba4926d57adabc04eb834cc8f0d23a79ab33e29873bb360cf
Confirmations
23772
Time
2026-10-09 07:12:58 UTC
Median time
2026-10-09 07:04:39 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a6be92e2401605e395afb8e0d0a1083ba0b591cf45e05dd485276e73d447ec3b
Previous block
00000089b558f08d4724fa3dbedd75560aa9ce500435bc726acfc3ffd0d8d9a5
Next block
0000001f2dd7bb95d8e4659637e8bc492599133d804ad39b40c18299e40baf7d

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 18371 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
038e077254efef5667aae9e0095f1b7f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a6be92e24016…6e73d447ec3b coinbase1250