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

Block 21407

Hash
00000018ead83682c4dc9d979a07bc80d0530714cebc93b18915fa7711580fed
Confirmations
20595
Time
2026-10-12 19:43:35 UTC
Median time
2026-10-12 19:34:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0a1f5d8e7a5eec2266d551d02199e42477306a18f6e7b5cd6f4f29ca0376a1e6
Previous block
0000003b1de529d387ad30c1f9b8214de9ea3b9fc370af9dd8a0e65c359976ba
Next block
0000005a0cadc9f36417ca2e52627e4e03c4f90fbcabfc0e7b7fd9a946286b35

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 21407 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
d7e365d353c125867c29343c0989b7c6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0a1f5d8e7a5e…29ca0376a1e6 coinbase1250