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

Block 19689

Hash
0000011abc7206245988cfa6956ee46314eef24d22dae7f9b5b6438ba5dd3de9
Confirmations
22400
Time
2026-10-10 20:02:08 UTC
Median time
2026-10-10 19:53:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3ccc02d0878b73482928baa4352a4f5661bf0d6240ebe70b80d5d5db2fe815fd
Previous block
000000a02c58ba796afc0c7a496a1aaf1c57fdcaac34bf9073895216305d7930
Next block
00000104ac3e4f52ed3c0560462e6ab7207fb9fb31f77cc072e09a82ae8791df

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 19689 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
55e2ab5a32cbb7d9fa3a7c10f25d34f4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3ccc02d0878b…d5db2fe815fd coinbase1250