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

Block 21908

Hash
000000d60e8db3318e47701d92f25f5f07c0a2884d588e464c1e3ba0a99f9ebe
Confirmations
19973
Time
2026-10-13 09:40:01 UTC
Median time
2026-10-13 09:31:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f3cbe786b9c1d6e396e4d16be6ea9e22352372102f3419795b15d331f0afdbaf
Previous block
000000c16667adb5969bf2f5c661370f617daa7cdf76cbe348b502455d92ec4e
Next block
00000086e6e5cff51c95707d41b16041236c07be7900065806149b8749bf7b08

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 21908 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
fc1d26b91ed4318f4be903e7f2276a02… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f3cbe786b9c1…d331f0afdbaf coinbase1250