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

Block 19534

Hash
000000919c3c0020262cfe793a1acbb83d88681bdf10277f053759c473d8554a
Confirmations
22086
Time
2026-10-10 15:40:09 UTC
Median time
2026-10-10 15:32:03 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7f5af2391fbec69cfb73416e41b08a224e73913f14e13629cb7acc8429d1eb6a
Previous block
0000000cc6029cef0f4aa11be88b878d8ecf33eab578742bf9573b5da9afadb0
Next block
00000065c03ade36c28a18e22b8b185b69f93f7df5997e78bb17d00045df208c

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 19534 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
caf4dbec4132ac2b0eafd2c1702b5974… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7f5af2391fbe…cc8429d1eb6a coinbase1250