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

Block 19247

Hash
000000a3c031b208cfa98885553aa39ac53d3bdc6764e6c9ef322ab934593899
Confirmations
22082
Time
2026-10-10 07:39:38 UTC
Median time
2026-10-10 07:31:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4f1f9d0b252a9b88c9930f532af2f3c3fa503cf26bbf8e238cfef93471c7e13a
Previous block
000000ef97b55acaa06431e196807a1c10060b0e31375072fc4f5f56bebf1e10
Next block
000000d8de410def54b1f62c1f05fb33c131a92431a87c7ae3c5189881741c52

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 19247 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
4bceeed9bd2544f4243ec68cd4284d24… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4f1f9d0b252a…f93471c7e13a coinbase1250