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

Block 21003

Hash
00000019aa3a201e8394c9d44bef465f44e071a62ef615a49f51eb72850323b4
Confirmations
20347
Time
2026-10-12 08:26:15 UTC
Median time
2026-10-12 08:18:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
8279c10dedf12def81da2955f3c33c12cdb183ad697160e5a9ae40d8916a1d4f
Previous block
00000076ebbf64daba16c4882b082ec5bd06d93affd15d94cf5a447cbee117c5
Next block
000000351254154e60b6e891ea145694b1036ddf4c5c16855afd56120be41d3f

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 21003 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
0f6a6b9e9dac120e3260bb7e010e74d7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8279c10dedf1…40d8916a1d4f coinbase1250