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

Block 19239

Hash
0000011c53fe5acc25797a21b6460126d812af04a1518ec3868d578fe1f7a998
Confirmations
22627
Time
2026-10-10 07:26:18 UTC
Median time
2026-10-10 07:17:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b2b8d60f6cb4d787fe52681266a1b0bba66a8708ec0b1c042e4993349e0b8336
Previous block
000000034c7689d61b159465571c4c2cfb914aeeb59c135ca95c68c9ddbfaf3a
Next block
000000ca7e4a4d79c57c0d6005b69613d5c94034559936fee66f4b81577bea95

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 19239 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
09e21fd5debc33015cc18dc682b0b1ea… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b2b8d60f6cb4…93349e0b8336 coinbase1250