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

Block 19303

Hash
000000e1098a3ab9b8c9dd10209c694b81a7ed25f567f12a1487e68090e80381
Confirmations
21635
Time
2026-10-10 09:13:52 UTC
Median time
2026-10-10 09:03:43 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bf6102167dad8a00cf2e49993d120b03c35218ea5203e6b1ef274a9a90c12524
Previous block
0000009c605f4eb3ec28fb8cb04a96b1b291ab59dfa6d152dae328928128bf72
Next block
000000dadfe6f6868fa8568946f2003e6df60db3ffcc80946aa343a1b2a15da5

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 19303 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
10d41bba1e1e6937425340f0a02ac3d0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8d87003f5e8c…b6495bea2bd3 coinbase1250.0000031
cc9a9435fca4…8a38cb625b3e pays to P2MR127.99986650.0000031