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

Block 19630

Hash
0000006d4e82413f51473abfe3346226571bc36ec675539fccbb4586c0e2fc6e
Confirmations
22689
Time
2026-10-10 18:23:12 UTC
Median time
2026-10-10 18:14:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a1c4a900eb5150b776b6acc6c204440518e17cbe5125b5d912084dc8c25500b7
Previous block
000000e3bb92e1c15af6516031a9ef282dc17c8c4542adc70cbb4f70a1fb7f0f
Next block
0000000763b4085f78ad904b885ba0fc1c59b08bef1b0b67e71c95c4c14d1d6c

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 19630 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
820bf15576d02c57e1d42b79a871c4e7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a1c4a900eb51…4dc8c25500b7 coinbase1250