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

Block 19880

Hash
000000b02df5efde473a0e0d3ebc6c9fb7a93bdd5110abb755d1934291396336
Confirmations
22361
Time
2026-10-11 01:18:42 UTC
Median time
2026-10-11 01:10:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
cb2ea8df1cf85c9bf7886e638c902a3e14cecdda839a7c3e0077bbabc9bdfc30
Previous block
0000005427121f6386889e2f92250cc73aa2f60ffc6ad0f31df3bab49fb0f127
Next block
0000005d7bc8597cd11894abc7da208e73366e8d8e7ad0d0df8e77a597b872b3

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 19880 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
83690fb9ba9f78e51e38c2aba7c052ce… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cb2ea8df1cf8…bbabc9bdfc30 coinbase1250