Transaction Details
| TX Hash | 55f560ddb396a8efc9acb407b767da50d13611d27884fb8285733e38258d40a4 |
| Block | 113,928 |
| Timestamp | Tue, 05 May 2026 01:01:46 GMT (6h ago) |
| Confirmations | 392 |
| Fee | 0.0246826 USDm |
| Size | N/A |
| Weight | N/A |
| Version | 9 |
Transaction Type
| Type | TRANSFER |
Inputs & Outputs
| Inputs | 2 |
| 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) | 2ca3b476dcd6f5a77600936a251c1d7e4e354c6235d7fc5b92c6a594a1db7ab9 |
| Pedersen Commitment (C) | 9e35d56d19c207abd7254f1f63cecc629aea05bff4cf6f244ef917d7ca7382e2 |
| View Tag | 8a |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 0900b49bd1e1d1eb7f4af55292e2c0a747870816bae4deedcb7f3d2578cc4a58 |
| Pedersen Commitment (C) | 86f6b1c0cf1a179a73f8ff3618da37e468b332bc0e38b492735ca739915b30a8 |
| View Tag | d9 |
| 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 | 2 |
| Proof Size | 6,080 bytes |
| Curve Tree | Helios (C2) dual-curve architecture |
| Tree Layers | 4 |
| Tree Root | 8ca402f6c78aa9649767a3aa236ca3a9f6fd5a1974960747c3585a2fc059e367 |
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) | 95a0b1a2cdc25bb30217cd9bcd3b8f36bffac4b66a7bbed3efef1d0d946154ea |
| C̃ (Pseudo-output) | 4f4c9e41dff41f39e4d392953723fdd414bb0476c24b3e69e24c209ddfbfcbe1 |
| Pseudo-out (Balance) | a6069700b2e2ba577b71365a0d52268796881ffc120c122bea9075ca7b10c914 |
Nullifier: The key image
KI = x · Hp(O) is a deterministic, unlinkable nullifier. It prevents double-spending without revealing which output is being spent.
Input 1 — Membership Proof
| Key Image (Nullifier) | 5ab69aefe4ab4349ab9490a3c2fed606bccd185f28a2f6bffa07a7abcd388fa0 |
| C̃ (Pseudo-output) | 7bf3e7f8b14ae22485f90efc5a8f9e6d9eacf0b7853e9f4300dc79f72e0819a7 |
| Pseudo-out (Balance) | 25bbc1a733f234af86a01fcc7bf863fac1887d9f49fda6a7f45506ea3db0d899 |
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)