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

Block 19143

Hash
000000963c639a6d4fb6915fae0d65ffa2785bb08809047d333eba094e918854
Confirmations
22662
Time
2026-10-10 04:44:42 UTC
Median time
2026-10-10 04:36:33 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2ab1632d59723291ac921eecf62e0d3b19e2073f8d04c9c96dbad896a8acb635
Previous block
00000113176d76a5113a1790c6a430a80a9b48d8f643c56beda533bd59cb3e16
Next block
000000a01712faf03d41f07c25d9d629ecd77282c2e7babc8e4363111dfed32b

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 19143 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
2523d201bf426ca0dcfc543bc09a5be5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2ab1632d5972…d896a8acb635 coinbase1250