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

Block 18136

Hash
00000020db849971112b07e45b6e8b1e5614065b63ed2302d31635b1cd1aaa78
Confirmations
24059
Time
2026-10-09 00:38:27 UTC
Median time
2026-10-09 00:29:25 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
b0239a9828c5ce56c0d11fd3b18c5d90a0ce0c5ad4d58be7981b298603d34c5e
Previous block
00000086b0e1fc18d01aca93ae0ca6a14f66f4664f5254e8fd079c14b520d5b1
Next block
0000003bf32c29998cdbd70db9f680089fdd8001bd9aef571d28299bb52db02d

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 18136 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
d57434c0b9da5e0870b63be6afb6a527… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b0239a9828c5…298603d34c5e coinbase1250