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

Block 21256

Hash
000000d5f77588b67582ee03b576091e3ada60f56e6748d54aa9b81863f77f12
Confirmations
19540
Time
2026-10-12 15:27:08 UTC
Median time
2026-10-12 15:18:35 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
9ef72ae9c2c23ed5cf373454022c934f877dce8a0eea19832b4edd58f1a8f744
Previous block
0000004e9a8678faf9ad8eff7cecb597c50b89362196a18f1024e451edcef748
Next block
00000085c4f0025b96b6e743247ed10a8481eae3c85816a3dbce8e2c5b023212

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 21256 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
4f3ffb2e362043db3a21e6d50bd672cc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9ef72ae9c2c2…dd58f1a8f744 coinbase1250