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

Block 18593

Hash
00000016d8278e83520ce0d60dd11423596706e7a661a972fa3244c93062e31c
Confirmations
21730
Time
2026-10-09 13:22:16 UTC
Median time
2026-10-09 13:14:17 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
90c98f1086543703ec4f651dc6e104eebc45931e857ae63096b1341ab345ec20
Previous block
0000006be6a59f6af530793e2717d8a7560114dd6a6bc07f2f3bf0c3fca63b41
Next block
000000c1976472671e23663fd65b309e2ff30d44eae77c113c1d9fded53fe51b

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 18593 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
a35ee0188bfd019759f1a23e24e3fe03… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d216912c901c…200e013e4f21 coinbase1250.0000031
567c4c83eb10…bedc43b2e3cd pays to P2MR121.99984790.0000031