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

Block 19544

Hash
00000045e30606f08365e726adf744e53986bd72fd5da8caf13c182113d6cb39
Confirmations
21590
Time
2026-10-10 15:56:31 UTC
Median time
2026-10-10 15:48:33 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
37e79e74c1b113b65b9b4a29f5ca2ce0fddc2a9f37abc6fae1cd083cc6f153b9
Previous block
0000005d17d399c660746418f6d550735ddbc0f09df49e2d1dd987dc880525e1
Next block
00000114d3f7ad60cf3f1a1c93f445bfa3923425d794b3d6130a11294edbdb0e

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 19544 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
064cd78233a36304a3f7fd8026dc038a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
37e79e74c1b1…083cc6f153b9 coinbase1250