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

Block 19347

Hash
0000009a6bd5e253f8eaf9909c6463f76e43527e732d2316ab8c3d2046b61f80
Confirmations
21971
Time
2026-10-10 10:26:55 UTC
Median time
2026-10-10 10:17:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6589499ccac1e4bce0ab8fbb93d0e189ca4493e84afef2c382d856f13415c1f3
Previous block
000000d71d5dab99b356ba8e8de603f4112ca8be240a6cc8052c496c92c3a2ff
Next block
00000107d946789013bb130a3f4d233415f795f553c5acd928bc2bf2619b69bb

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 19347 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
707e656a8ccf71366ab923eff46e9243… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6589499ccac1…56f13415c1f3 coinbase1250