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

Block 18979

Hash
00000085f697365f069c38fb91513e8c1b7e9a3bd8c4d76c0757dee178edb81e
Confirmations
22069
Time
2026-10-10 00:04:14 UTC
Median time
2026-10-09 23:55:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
895dc19bd246ea5ef60521412657b00e8d2d40af496da329daf6d5448f9e8e6b
Previous block
0000001b3668aa7ee2a14bf2c25221124214e74a84c405c0072295585c139847
Next block
0000001fca3a70725af730810685317cabb91a5271e5349012f7d8869b6f33d0

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 18979 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
9333db308439cab67ff598fdac0ce1c6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
895dc19bd246…d5448f9e8e6b coinbase1250