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

Block 18947

Hash
000000e300c6d5ad20d445bfd42ec2ee22bdd9c4199ad90811f55e73a6cff954
Confirmations
22292
Time
2026-10-09 23:09:27 UTC
Median time
2026-10-09 23:01:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6c14d0a28c359808e74ac1b129acc708f23e34fb9eb4cf75eee761607ee4e02f
Previous block
0000001e169bba40fa60b0b9bee73848a20c9adab11493e348b1b3dc30f5f6f8
Next block
00000061d51acca946ea862efe84fdf9425461da6533020ebaca777fdd2d14da

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 18947 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
9f9f1a67f656ec6a507533dea0294a80… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6c14d0a28c35…61607ee4e02f coinbase1250