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

Block 19801

Hash
000000f2c1f31a2c36476f322ffa6f7a777e3bb4bdf4f6fcbfe75bb7c8b583ae
Confirmations
21276
Time
2026-10-10 23:10:12 UTC
Median time
2026-10-10 23:01:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3b9447c1e1975707cad6dc6ae27d0cc079ffcf7e4c26e436238ff949eb78b762
Previous block
000000d00e64341d1a5333d4a199b0d579f1ec582ef31be41b2b3971c3e0abcb
Next block
00000049c90ba30a3cf8840cf63568dc33b5d4f3460806f1e45c87043631a52a

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 19801 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
e6f7704707624581229005b12c63619b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3b9447c1e197…f949eb78b762 coinbase1250