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

Block 18986

Hash
000001026a07757ee630a0d9beecbaa2da653e9dbda170f595dd65af179ac74e
Confirmations
21737
Time
2026-10-10 00:15:55 UTC
Median time
2026-10-10 00:07:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4793eb15de47acbe1e0ccc68d7ec8b11ce429f41b40044b204cf599f79a85ba8
Previous block
00000075c6c23b7010d561a952d47601b72ac8e84b680a28fe8565652102519b
Next block
00000109e67cfdc493b4e894ccf5206cabaa702b2c0b605863b45411b1e88f1d

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 18986 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
eee01ba548578d98ba19aeb1027cdc1c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4793eb15de47…599f79a85ba8 coinbase1250