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

Block 19888

Hash
00000102dce04a1a1dd39e8a661ebfcb586e87ad1dafd67e44982e318c1c25fc
Confirmations
22381
Time
2026-10-11 01:31:49 UTC
Median time
2026-10-11 01:23:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b7b261b0bb317c4cd2e192edfc04cbf1c8285467b6bec6a109e44d58f4f5f63c
Previous block
00000041303185dfea646b30108bd6a24ba9252f409aaef92913ce1a6d7c1bc7
Next block
000000e76550a0a2364f91d34a9bc4c69eaba463ae2eabb5799ed7733e8f9a9c

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 19888 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
d095157f05102aa83d912dbe9a5ac584… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b7b261b0bb31…4d58f4f5f63c coinbase1250