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

Block 19499

Hash
0000010746bd6387e5cabffc945c69f58532c0f4e439f2200f224b8d66c0435a
Confirmations
22760
Time
2026-10-10 14:41:32 UTC
Median time
2026-10-10 14:33:54 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
97d4a15096bb9ceceec61cd4ca6c14e230e0dd7dc60e04f6285ddb0e399b1047
Previous block
000000be6cf512ba908dccacf89136f913c57f8e4deba67eda407b1fd2da0d3f
Next block
000000309c3bcac034919c6c6d281da32233939e35ad57ffa739e7f414e25517

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 19499 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
45b1b6f631d14e303bb05024ce954a33… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
97d4a15096bb…db0e399b1047 coinbase1250