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

Block 21923

Hash
00000064085531a0578ab87704092e83dd0f1061a3f48c4c9e3c6e82eece3e59
Confirmations
18990
Time
2026-10-13 10:06:08 UTC
Median time
2026-10-13 09:57:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
bf254c043f9e6c91826463be549402acf61b4334172467cc48e4e1262e2b9588
Previous block
0000000868ecd75e8f5270f383833516eab47ec97aaf1552c20431b28aa1bfef
Next block
000001393ff5c47bcf565ee23d5b85ddc09364b86093934f84a1aaffe2df46c5

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 21923 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
6859b578603e38cf7a4928c9415e77ac… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bf254c043f9e…e1262e2b9588 coinbase1250