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

Block 21777

Hash
00000108470786b5223e03a2757a9975965610c54abac444f18621c9f0fc1357
Confirmations
19411
Time
2026-10-13 06:03:46 UTC
Median time
2026-10-13 05:55:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
4663041b7872bd4fdd3a8d0f8bba6309e3a1152838d4a4d0593abad4415086ba
Previous block
0000011232c266d2bb844a129e2b0e471d78cc3747750f12d847059f76974d40
Next block
0000005fc3a57a1665f3266d14a809b2e46606ff1eda1ae4aedb3318aa6ab45f

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 21777 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
8def93b37f8a7cc077f37bc31070e055… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4663041b7872…bad4415086ba coinbase1250