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

Block 19975

Hash
00000023166ae11445753f38ecb63ca81fdc538cf903beb7630b215dd4cde447
Confirmations
20846
Time
2026-10-11 03:58:28 UTC
Median time
2026-10-11 03:49:08 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a32bafe0dbb5d3367a1caca68b9b1b77fab8a2dee1db76be8efa64746d447b45
Previous block
000000f3abc9d3c47c8484e4f7be6039c473234ebe9bd22a0e9636ba64d37a05
Next block
000000aeaaca7901c2885a2709b645b0b14fac42de1e3b342bb43be98f4dbd86

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 19975 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
f0bb16b35cbb7974c5ece5274e4d50be… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ef4b9edda340…802d35374c7a coinbase1250.0000031
99776c6655ec…71161b2304fc pays to P2MR1212.9998820.0000031