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

Block 19593

Hash
000000f1a3829e600aae533cb7285173a6510aa6d34733c4cb5f5bcf67af0ccd
Confirmations
22639
Time
2026-10-10 17:18:43 UTC
Median time
2026-10-10 17:10:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5c5bb04ed585810875488d89fbf9e13cffa74353e2816b06e26c1e8f301a1ebe
Previous block
000001141d191eb5f653a38b965e42c8905dacca46f1b80d11c5216f44c3806a
Next block
0000001455b9c93dd3305c1a476168f5890761bc2be572777d616d23398f84bc

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 19593 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
04023b218da555bf311e3ff6ce0d6db5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5c5bb04ed585…1e8f301a1ebe coinbase1250