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

Block 19655

Hash
000000e8b88ae28f2003b334fbcb484ed28e9a52ac259fd7cc8d9ef226cc87b7
Confirmations
22574
Time
2026-10-10 19:04:33 UTC
Median time
2026-10-10 18:56:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
40524fe3a0eddc1594246e88b17f1adf7ac06d009c93dd94f252130c609dfa0c
Previous block
000000ad7e9adcbc6479fbe700e6a477ed639091c663cbe89f9b54c3434c71ac
Next block
0000009770028fae5e443cf5bd1922b6fee94e2197a77e5b94884a7328ad878d

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 19655 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
7b1e76781d46049100ea6e0a8db973e9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
40524fe3a0ed…130c609dfa0c coinbase1250