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

Block 21247

Hash
0000004f83c26064fa25a7fb1ae141a0047776c582f8ec3eeb90f8ce571f39a8
Confirmations
20020
Time
2026-10-12 15:11:50 UTC
Median time
2026-10-12 15:03:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f0e7ee02dad633ddf4d89109358e409529b7143d834b92b16d7eaba3e3ea01f7
Previous block
000000dbf0cf11f10492f5590f9de687cad47303646260e2dcfe922a567ce7bf
Next block
000000e68701225ac7edfecbf5b269fa9780e9a9a34dcbde12c728f6d1813f9f

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 21247 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
cae43c06702c8ee209af4400b3996577… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f0e7ee02dad6…aba3e3ea01f7 coinbase1250