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

Block 19337

Hash
00000082731d0ac9e5dbdf4d5e786dcb9efa4e4674f4ff51a35031f4d3d685ec
Confirmations
21020
Time
2026-10-10 10:09:39 UTC
Median time
2026-10-10 10:01:32 UTC
Transactions
2
Size
2,991
Weight
11,445
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8da6c479d59334cffa2289d0f4232007757c57ba3887e25c3862dd5f6f95572b
Previous block
00000058c197d8c124153e248c51eba615c777049b264ab46916741e7664a9e2
Next block
0000009dd4857a93a2231ba1288605c94e3336d551b2647a81bbf6509ed5c601

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 19337 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
f290d0285fe49af466ce6e902c2df197… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e826fd418be9…fa09977e76ed coinbase1250.0000117
3c09da550cc4…15fac581599a spends P2MR110.00998830.0000117