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

Block 21081

Hash
000000a5fc7c0ef6a9359c268b450a250eae4fbc34ce97b4a25e302161ec1e7f
Confirmations
19134
Time
2026-10-12 10:36:03 UTC
Median time
2026-10-12 10:27:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
109eb61781e9161a44d0df3ea397236b6ebe883bfcec2c088c8ff23a84294b90
Previous block
000000b6c6069bcf92b71d5c9e0a6952ac5821b751644f19e57c1c3fa39b767e
Next block
0000008c7230acec05b63b96be3f05bfd1f23a70fb9cbbbf2c050fe9f0fbc9c0

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 21081 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
89041056a1bafd22f3ba09529f2dc739… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
109eb61781e9…f23a84294b90 coinbase1250