Transaction Details
| TX Hash | 8f8e70eb6fb4937237c66387009bc0382eb279903838dab9a5c1624b5fa956ae |
| Block | 116,229 |
| Timestamp | Wed, 06 May 2026 19:19:39 GMT (3d ago) |
| Confirmations | 2,383 |
| 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) | f15333f083adca9d532df71420c4b279ec73f35b3c4b4d4f9f2d7a6bb723f19e |
| Pedersen Commitment (C) | 6103a93060436f87d91bb6c8c60a909213a2d07aed045365ea224cb9769417c9 |
| View Tag | ae |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | e6e1cbb2d475a949e02b604d60f3c9c514414d4a1887ce89c39739efabbeaf57 |
| Pedersen Commitment (C) | 9fbfd7fc89b871ceeadbcd4c1331b351be35cdf51f3c70f3af5e7547aa7512ef |
| View Tag | 4e |
| 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 | 831acbf6bb0ff36a0bde4497645ccb425be982931921e375d84a89fa84ac5a4a |
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) | d04336b58f382258f7bd71bd97c120225d8fba2726a1061aab9e673fd7d50f39 |
| C̃ (Pseudo-output) | 134cd40c9d9570396e67125dd67bd16a43c640c2440f3c1de13612503b579c14 |
| Pseudo-out (Balance) | 67189bd07efe9e8d64db0d2c0773ea0b23e3142a7d40a105b330c8fe49d822ec |
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)