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

Block 19719

Hash
00000073ddd814ef77c5f9dee2e9d80045fa94e00c140e814324c6fd8add04d5
Confirmations
22018
Time
2026-10-10 20:52:25 UTC
Median time
2026-10-10 20:44:20 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
27a9073bc71999422ddebdee99f8db197df07f08d171c041f9268a14903cd3e2
Previous block
000000a37062084762bdd976d56891e5ba43d26539bc77984beed6991a2d89f4
Next block
0000010f7b477c7699eb2a81dbd50c0da5ab35f55359b835389b5e27e7841912

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 19719 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
b3e1ee19938058bcbe2dd535a09081f8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
27a9073bc719…8a14903cd3e2 coinbase1250