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

Block 19789

Hash
0000004a6de67c8812e1dde7beb1634ce990ddc444521c7bc0aebb9d0728ca95
Confirmations
21156
Time
2026-10-10 22:49:42 UTC
Median time
2026-10-10 22:41:38 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ea595ac0f85ef7ef416298c9e4c09e1cdb14be84303e23fcae3458a2489bea8d
Previous block
0000007dbe6c8a493fdadc327dbe4d321434b70a339ae0c24a935c9267ba23b6
Next block
000000eead0ad5bd0dd2d0e712ac69088914692187a2750fd196efcd8a17f5e2

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 19789 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
3bb52fd189827a9588e456d7a8cc002d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ea595ac0f85e…58a2489bea8d coinbase1250