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

Block 19172

Hash
0000010c375ac7e24cb992e904021753ee16a93b1af2bdc1215efcd5d4531fac
Confirmations
22977
Time
2026-10-10 05:32:31 UTC
Median time
2026-10-10 05:24:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
84fb3c1048c530544b5adb355a1b684a3760c948ad9e01a3f4a84d073c444de8
Previous block
0000004ebe485d23add875ac99b14db84d8c023457a72d399ed1f27fc3420c6b
Next block
000000f334030fc48b71f3a5072077687ca0dd5fad181d2edfcda4de12d1a909

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 19172 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
217455fef28a400467d318d330990b74… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
84fb3c1048c5…4d073c444de8 coinbase1250