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

Block 19450

Hash
0000007622d1f27a79a9a8a28f132d9e9673ae4d1784647da8864d20b5dd3a24
Confirmations
21092
Time
2026-10-10 13:19:51 UTC
Median time
2026-10-10 13:11:44 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
08f366c8b7826e90e7cddde7195d80fa826624b5321a5730e1602602695d5fdf
Previous block
000000d636665fd03a2e57c885afba1e415a34ab4ca20f7005cf627a3a68e95a
Next block
000000d5fd504593fe842c454e5602bee218145c88e003454b386676b6ce2039

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 19450 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
13602fe8898f2ec7e9316dd4a479f450… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3e7a12c9bb00…4e3e300e5166 coinbase1250.0000031
731b80e762da…004e49acd2ea pays to P2MR1247.99999050.0000031