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

Block 19306

Hash
000000661baee0e10a22137cff90e297ae8b89054327047575e34ed5f3424b25
Confirmations
21487
Time
2026-10-10 09:18:38 UTC
Median time
2026-10-10 09:10:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e07daa4d20f14fda9a611e793cd130cff81b4a0211a6e885964ad18cf92095c0
Previous block
000000a39baad5437e1bd07d4d56ce32b2b2208249491ccadc7476f1294ef280
Next block
000000d74e999d3e79058e7728b6d166bec817c9b879365913aa6372972cff6b

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 19306 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
ada8774097abff64649e2c659e1ba692… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e07daa4d20f1…d18cf92095c0 coinbase1250