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

Block 18747

Hash
000000150f8cb817e171d0438aaefbd0b5a27188b8cb8303aa5c8980c539d78c
Confirmations
23654
Time
2026-10-09 17:35:21 UTC
Median time
2026-10-09 17:27:24 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c98a672577a46a54554054a30259a7bb2c3a1d2c100839fdbaf2091bb1af8be1
Previous block
000000b62fa35c802c90fc022ab0e64a5dc465e129250d6d621d1fafeb9187a4
Next block
00000079d2f8f8e5ca30b2c110cc9f99a2fd888dec04ff87374acc1d211f2b5b

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 18747 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
884b801f478f2ea71f07751c55760280… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c98a672577a4…091bb1af8be1 coinbase1250