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

Block 19738

Hash
000001012d525128d9d8d80c09b66be50c54f468b08715ccd3eb017bea453c9f
Confirmations
22029
Time
2026-10-10 21:25:24 UTC
Median time
2026-10-10 21:17:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5c5c57ebd6e87af63413134557477dc32a5900181afb5c532e36fc4c94d0139b
Previous block
0000001aaebad4426b0c762e34838a132548e1d4c7e6cad96a5546ee345b45e6
Next block
000000c498dbbf747babaa04540356bcea7590f96e78d101fd1586edc19c7046

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 19738 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
10b30e1608263709703092610017b188… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5c5c57ebd6e8…fc4c94d0139b coinbase1250