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

Block 19883

Hash
000000c7353fe94ce9125deb62b8eb084f5e4d3f813a48e7b50052f98260fa3f
Confirmations
22347
Time
2026-10-11 01:23:46 UTC
Median time
2026-10-11 01:15:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6fc946905fba0dabf5ed83f54a4ec9a31727bc43b2b759a266a812dd8fd8348f
Previous block
000000c0fe766f19c24c5d3be7da80707850d61ede252766570eadae3649d83f
Next block
000000b50e6d3f7858df1b50e73bf1a34bacc7a68fbbf66888e4af0fd7c12ad5

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 19883 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
e6646e4988ea6533d35ba2edf69a9851… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6fc946905fba…12dd8fd8348f coinbase1250