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

Block 19877

Hash
000000ed7f9a7ed74841c973cbf85ef84a2dcbff692d87f4936c0e1e77a64ca2
Confirmations
22376
Time
2026-10-11 01:13:52 UTC
Median time
2026-10-11 01:05:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bdf7a16bd180e018536741a45b604565e40a189a2428699690ae2eb28d60c4df
Previous block
0000004dd013ab49ee9055b3d31f34eb428c78bc5b702487f01bc65aff23d0eb
Next block
0000005c519395dc7d820dbf93a1f7cf9a12ef32c139e6380a4d2ac5d77606cd

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 19877 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
0b850845077a3aa3c2a9b38a016c6f0c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bdf7a16bd180…2eb28d60c4df coinbase1250