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

Block 21665

Hash
000000dbd70b5d2ea4bb258600e89fd1a367f681f701d5c4291f3a9036266f1e
Confirmations
20392
Time
2026-10-13 02:56:36 UTC
Median time
2026-10-13 02:47:35 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
47586840421716e578bb42f941937dc075e0b3884c21a05cc09cfe749c7ff005
Previous block
0000003570dbf6317bbeafae4f6b302e6a81d8d7be5ac2504cc4120eddae22a1
Next block
00000066885cc35f354c4c70483e67f030c274cc0505a072188f7b5939f06be1

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 21665 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
49fce15df142ea84e336eb1dcdc3697d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
475868404217…fe749c7ff005 coinbase1250