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

Block 19734

Hash
0000001809d2377f7fa910549a4c1dd708e3a49652bf00c3c4be9d9b5844e405
Confirmations
22145
Time
2026-10-10 21:18:48 UTC
Median time
2026-10-10 21:09:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c67a26824527ce70b3035737ab6a94a147d8e79058489a24eea5a5bec7efcc90
Previous block
000000da76f5a4a4c583642eb828a67f5c5a027db04bf38029f0b45d3c8e6429
Next block
0000005fdb2add862d2e170674d38d244136bdec28f20640568cd6c5e2726e17

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 19734 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
ae16c541b50520d9a853ce2f5dbcc1f7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c67a26824527…a5bec7efcc90 coinbase1250