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

Block 19730

Hash
0000002ca9a45a5de59e312afc4d3f134e8f28359f7b367577244a4c71975172
Confirmations
22349
Time
2026-10-10 21:11:21 UTC
Median time
2026-10-10 21:03:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7ba0f3254b99b564568b562c9c0171acc296783da74b88b6e847e1b2c00b020f
Previous block
000000b03a307933bf0978340ecdd2a67871639cb6c332d37dfcc0eef429b656
Next block
000000f7464b1d10f0fb9ca3364451d328bbb94dacbd3e0d9e310207f3a803e7

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 19730 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
c18f08727cf56da3cac6530d3d2a02a7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7ba0f3254b99…e1b2c00b020f coinbase1250