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

Block 19583

Hash
00000000e0fb9fda416add86ab6d50e1d09dc8a9c7e52d36b9df535bd36b639e
Confirmations
22506
Time
2026-10-10 17:02:44 UTC
Median time
2026-10-10 16:54:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f33f1cadc1be94fc7801103a95eaef715976268fdafb5629f73aa70e47fbf263
Previous block
000000d816bc6041445e85ad9d79967cb4ae1cf757c427e977bf882058f542d5
Next block
0000003307a1c69e3acafab3995015b76a1c6b4dfa909a271b3ff9d039532c74

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 19583 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
4913d9ca5509ce664a44f00a1824c0e8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f33f1cadc1be…a70e47fbf263 coinbase1250