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

Block 18213

Hash
000000a725b1959ae5b30c7a767c8fcee5bceffe6a4153c928be61ed50ffb854
Confirmations
23873
Time
2026-10-09 02:47:41 UTC
Median time
2026-10-09 02:39:37 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4e02e5bfdb9d238a4f591d316a75b4a58b5d22491e6b76ae9eb2c44bcd84c74e
Previous block
000000a2a7be5ba52c2007702c54d96b8e28602bc1818f34505b8484a58f9b22
Next block
00000042636ca01a29b15ae1a65deda2fe079a3a0364010637cb72a671b26ee4

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 18213 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
7328feb60ff3322a67f8542ca5b569ac… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4e02e5bfdb9d…c44bcd84c74e coinbase1250