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

Block 21507

Hash
0000008b3a9d27da97a6414d4f532d750c06d74e6b591c1abbd58de6ed150c6f
Confirmations
19719
Time
2026-10-12 22:30:00 UTC
Median time
2026-10-12 22:21:34 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
9e5eaf166b2944d7acd6309f3b84a62f1cbc78bf26e9ebc452ec37e6e711e011
Previous block
000001336b1040c974810d858c6ba973609d2df360ea69962445add1a40a9f7d
Next block
0000008bd3f0367c7288d4353640d05b92d2f612baeb44536c0d72ebb47b596b

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 21507 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
ebbc69003285e0a8e17547a90350779a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ba75a0063a9…7ac7deb6df5d coinbase1250.0000031
7589a922dfe3…d46c9d6491ed pays to P2MR1214.99988820.0000031