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

Block 19217

Hash
000000f3c7200134a3502fcebfa9b43d5ae3487bd18054d43ea0c2085680750a
Confirmations
22601
Time
2026-10-10 06:49:32 UTC
Median time
2026-10-10 06:40:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
52a4d278125ec9f46ede2579c36e1ec30df8dbdb665cfd68bb11c57f1702cfae
Previous block
000000306ce77ce3fa3c290bd273d167c7560c58a1a87567fd0891c59d1f6f61
Next block
000000b74603c1a09eb1953514681dc39fb6caa640deaf158799f619226ac30a

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 19217 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
039d9c8db2dc25de9438aa00710f67ed… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
52a4d278125e…c57f1702cfae coinbase1250