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

Block 18491

Hash
000000be62fb1555d486c1c740626e72612a43a8c2d8d181fc403724403f60b3
Confirmations
22345
Time
2026-10-09 10:34:23 UTC
Median time
2026-10-09 10:25:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
999c7bd1dbe42707472c7c2ca1e7af182dad02b482eb7617426493ebab6bdf78
Previous block
000000c326e39ae16e63f4e8ca021c37d4723942747ccb16c6f0005965763054
Next block
000000b3c22310f1fbd7ec1daf652d64d09078e1a80a0340b52a8c679c313136

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 18491 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
04029fc6b728b5d9248bf8eb6d75c35c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
999c7bd1dbe4…93ebab6bdf78 coinbase1250