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

Block 21331

Hash
00000087f03a5afcf1b31ab4b8f161390f2c1188c192a46d07fe8692da1c7a61
Confirmations
19548
Time
2026-10-12 17:36:59 UTC
Median time
2026-10-12 17:27:47 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
28315aa33f191dcf1f77357036d4f8f88f08c0d42a5e621da9f917ff0b1213da
Previous block
0000007fb6a88163aae2027dbcd60a6a2b12bd150b58bb36812a03af0b29d3e0
Next block
000000782288f799e5854c0a8666f26b09269ecacd0ad88fde34f5030c500eb5

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 21331 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
138386e42fbd345df0cdcdc836ed982c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
28315aa33f19…17ff0b1213da coinbase1250