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

Block 21080

Hash
000000b6c6069bcf92b71d5c9e0a6952ac5821b751644f19e57c1c3fa39b767e
Confirmations
18986
Time
2026-10-12 10:34:32 UTC
Median time
2026-10-12 10:26:10 UTC
Transactions
3
Size
10,992
Weight
20,268
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ff2a3df60840599cb9eea81694b7b4b699252f97fb38fdafae28670e2f71bf54
Previous block
0000006cb50a31fec9a45ba24aeecaafdfb9a462ec3b0c3b6a2dd61da30d0c89
Next block
000000a5fc7c0ef6a9359c268b450a250eae4fbc34ce97b4a25e302161ec1e7f

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 21080 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
a1719cec5d83bb0586bbedfc9d2f4807… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4502b00a72e0…f7be90bc0e06 coinbase1250.00004644
b3429919bc2a…9a788975ab1b spends P2MR pays to P2MR221.899991640.00000492
0d11e3a35a52…426f0469c9a5 spends P2MR pays to P2MR221.899936740.00004152