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

Block 19676

Hash
00000001c69c84d460aea0c790349a9dc765045fd402cae03106f0de588e1583
Confirmations
22547
Time
2026-10-10 19:40:31 UTC
Median time
2026-10-10 19:31:59 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4a831881055e80d930a839d26c7ca6548de8da42c2098d6bb00b36dc5b4fe815
Previous block
000000ab70024fc8cd6101b291be9d05ce09e61855e2bd9e38295f36d2be3e8e
Next block
000000352389883491c3eabb8f50b6800082db09a30019785fe7e4ecfef306b5

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 19676 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
7070b049135bdb224b4c2307a8b4e99f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4a831881055e…36dc5b4fe815 coinbase1250