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

Block 19305

Hash
000000a39baad5437e1bd07d4d56ce32b2b2208249491ccadc7476f1294ef280
Confirmations
21665
Time
2026-10-10 09:16:58 UTC
Median time
2026-10-10 09:07:47 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
297c6b36d2d39a482589184b8db3fae2dfe732cbfd4dda35c9e7c3bd109ff5f6
Previous block
000000dadfe6f6868fa8568946f2003e6df60db3ffcc80946aa343a1b2a15da5
Next block
000000661baee0e10a22137cff90e297ae8b89054327047575e34ed5f3424b25

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 19305 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
565fa2745916945e9e4c3a7f41ce4a77… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
da5b2ade2d82…fd1749e78be7 coinbase1250.0000031
43ba90a9d74b…056e058bd568 pays to P2MR126.99986340.0000031