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

Block 19497

Hash
0000002f3bc6c3e2f177616fc793633b7e0f52f6502ea681348eed06989cb8b2
Confirmations
22625
Time
2026-10-10 14:38:27 UTC
Median time
2026-10-10 14:30:37 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
940f27371d41840d47e3fbcee62d31a3ae9c1899a6dc7ccd48817f70a1b1d3da
Previous block
000000cd7aef486a8625fb280490feea72ed8b0e6b480af3fd9db2d8c162e6e9
Next block
000000be6cf512ba908dccacf89136f913c57f8e4deba67eda407b1fd2da0d3f

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 19497 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
26e899e2ee411e008bb3fba52180d49d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
940f27371d41…7f70a1b1d3da coinbase1250