Transaction Details
| TX Hash | 42f764f145a03c9cf85a11a9911926bc0a81063e4fdbf272fd863be62dbe9e8d |
| Block | 116,266 |
| Timestamp | Wed, 06 May 2026 21:01:27 GMT (3d ago) |
| Confirmations | 2,408 |
| Fee | 0.01908476 USDm |
| Size | N/A |
| Weight | N/A |
| Version | 9 |
Transaction Type
| Type | TRANSFER |
Inputs & Outputs
| Inputs | 1 |
| Outputs | 2 |
| Privacy Proof | FCMP++ (type 11 — Full-Chain Membership Proof over entire UTXO set; decoy rings are not used) |
Outputs
| Output #0 | |
| One-Time Key (O) | b709a2bf1678d663773e13d7b52a3b0f2cf627f714fe8806c0e1e814837a55f1 |
| Pedersen Commitment (C) | 8f4e3250d478b671d48c2717ca42b16e6086085c84688b2a3ad1f63f171a5e38 |
| View Tag | ce |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 9e6d5f964931f6674bb5b4d3a8ae524485f6bcfbe98c42fd8cc4020f05582217 |
| Pedersen Commitment (C) | 48fb49081cc45e4db97e4b4fa5d932ab27494840bb6abafefe8ddd7feaba5a02 |
| View Tag | 40 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
Note: Actual amounts and sender/recipient addresses are private (FCMP++). Only the transaction structure is visible on-chain.
FCMP++ Proof Transcript
| Proof Type | FCMP++ Full-Chain Membership Proof |
| Anonymity Set | Entire Chain (all outputs ever created) |
| Inputs | 1 |
| Proof Size | 4,544 bytes |
| Curve Tree | Helios (C2) dual-curve architecture |
| Tree Layers | 4 |
| Tree Root | c4cece653b475f191243d525057cb5338c8883053419877086531ba7ca610f6c |
Curve Tree Structure
Layer 0 (Leaves) : Ed25519 output tuples (O, I, C) → Selene (C1) hashes Layer 1 (Interior) : Selene (C1) → Helios (C2) commitments Layer 2 (Interior) : Helios (C2) → Selene (C1) commitments Layer 4 (Root) : Helios (C2) tree root
The full output set is committed into a Helios/Selene curve tree. Each leaf encodes an output tuple (O, I, C) as Selene curve points. Interior nodes alternate between Helios and Selene curves, enabling efficient recursive proof composition.
Input 0 — Membership Proof
| Key Image (Nullifier) | 5ed0933e6236fbda8d20a960950df8b6c3a2453ec5e34c3d26012e23615823d1 |
| C̃ (Pseudo-output) | 70139ca088865f621c9134c26bfba5fd9f2c011165981b2f0933faddbe08a87d |
| Pseudo-out (Balance) | 07d4f51975b0cf51de7911e7e8e63508e4e99878633b3e989e474dad628671db |
Nullifier: The key image
KI = x · Hp(O) is a deterministic, unlinkable nullifier. It prevents double-spending without revealing which output is being spent.
Spend-Auth & Linkability (SAL) Proof
ÕRerandomized one-time key
ĨRerandomized linking tag
RRerandomization scalar
C̃Rerandomized Pedersen commitment
The SAL proof demonstrates knowledge of the secret spend key, correct key image formation, and that the balance equation holds: Σ pseudo-outs = Σ output commitments + fee.
Verification Pipeline
1Deserialize FCMP++ proof from transaction
2Extract tree root (Helios (C2)), layers, key images
3Reconstruct signable hash from tx prefix
4Verify Generalized Bulletproofs+ arithmetic circuit
5Verify Helios/Selene curve tree membership (per input)
6Verify SAL proof (spend authorization + linkability)
7Check key image uniqueness (double-spend prevention)
✓Consensus acceptance
Privacy Guarantees
Anonymity SetEntire chain
Sender PrivacyHidden among all outputs
Amount PrivacyPedersen + Bulletproofs+
Receiver PrivacyStealth addresses
Double-SpendDeterministic nullifiers
Curve CycleHelios (C2) ↔ Selene (C1)