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

Block 21890

Hash
00000062073bdb3bf4689961512118ee11f2473189c014f4609c8ac8316fa5de
Confirmations
20231
Time
2026-10-13 09:09:29 UTC
Median time
2026-10-13 09:01:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
e9687aa3b59c00e6b4889ca9c31546aab47f6cff013ecc8eb0b32a94a9305ca0
Previous block
0000007159bc23b99ce45466d333713d92c8b0e07523870541ceea8592fd1335
Next block
00000042ef3c306786261b3ef6b46ae031c728f0f8565772bd0ad987741664a5

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 21890 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
811b4b193ef59c7402d272f6aaff9650… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e9687aa3b59c…2a94a9305ca0 coinbase1250