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

Block 19354

Hash
00000039a45da643ccdb2f01b6038b68b9870942b2a0b940f0134862b497014d
Confirmations
22153
Time
2026-10-10 10:39:36 UTC
Median time
2026-10-10 10:30:37 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8e4546c576771fd11f21e68f224b9eea66a367f58db3d18f07fbd939e6e5cb07
Previous block
000000758555fdec19772973a794dea1c0a3dedf285df004784e6bc07050e28d
Next block
00000079f5cbcec97dfe8ca87aa4c798d60bc25cd8650cf003c744e7552fa558

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 19354 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
744a068c6b5f401ea2a22f6078783ab3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8e4546c57677…d939e6e5cb07 coinbase1250