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

Block 19565

Hash
000000b1f7c68b552c1d6f50da2fcdb8d69156b877e1803ee49bb49c72209da5
Confirmations
21674
Time
2026-10-10 16:32:01 UTC
Median time
2026-10-10 16:23:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
69355e326556ca0fdd51baef355538efd3f07e2171a342bd05847a2414317f6a
Previous block
00000044ad448b0fb8b9f6f076a5d227680f4cc842a5fb6774e82f84dead3c33
Next block
000000b9c96374b322501eb7ef5e0089ccbd85e8207cbb1ba764f2f70922d568

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 19565 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
a14b1e305b0b5943c3e02e9a127dff58… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
69355e326556…7a2414317f6a coinbase1250