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

Block 19575

Hash
0000003beae58aabc1f80c91276b7616556e4f58ebb5e5eac06920e2f5a96257
Confirmations
22342
Time
2026-10-10 16:48:47 UTC
Median time
2026-10-10 16:40:18 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
846a17331d3e208c0a9fbee8a3069783add1e808bdf5aa55a4ca3a3102aeea19
Previous block
00000062680cad146b39e52274cef2bba66beb075ea7021062fa1eaa2965b967
Next block
0000002d9912ff5eab780ef63bf9ebb91b3878dc9a757b3c6a4adb49375739ce

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 19575 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
4838a493532ddcfc6bb22161db1b8a99… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
846a17331d3e…3a3102aeea19 coinbase1250