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

Block 19560

Hash
00000101f3803709d4f143e074f2733bcdb7b394e2eaf8037d87eb544d9cf7fe
Confirmations
21133
Time
2026-10-10 16:23:41 UTC
Median time
2026-10-10 16:15:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a16f587696049e64bc317ce3c28846a1e56f96578b393ffeed80381109395d9d
Previous block
000000dcc85ff37f13b0d8672b32acd9430307cf77de483d1a256d97af3f9738
Next block
00000096f89ea21573762ebdcdbd3df86ce25439ac6207c58f8007f5f916b99e

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 19560 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
ccb4eb4b69373c159a8704d00b47a993… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a16f58769604…381109395d9d coinbase1250