Transaction Details
| TX Hash | 40dc9952d41cc57c24100bc2f3860fed3254136b32e9a0ecd4828829922e5ce6 |
| Block | 116,264 |
| Timestamp | Wed, 06 May 2026 21:00:25 GMT (3d ago) |
| Confirmations | 2,411 |
| 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) | 286e2f5e89cfa7c1783cf7784bfa04ba08aeee811f6349dea97d717b7c88fabb |
| Pedersen Commitment (C) | ed5f58059d103162147e46f6d6aa90158b492098ea2c9e8bd482a100ddf00b25 |
| View Tag | bc |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | dc08fc8ed979de9092ce50cb5283020fa45186f7c4ae79b9227305dea53f8b9b |
| Pedersen Commitment (C) | 8da31d893f6dd9abe7af3ce65e2d9216fd4756121136a63b654b8a873b3a7fd2 |
| View Tag | 49 |
| 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 | 7cc59285182998a7f23e514530cd8b9c8c90f04824f231e97b9c7b1faf2ca1bb |
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) | de0d8a0de991d879661080c6da9ee2f9cb7fe2f72fa90a3801b121115dd6f08d |
| C̃ (Pseudo-output) | 2041acc33e9af31ee3dfb250ce2125eee3dcab20c02e552ca252bb96a0d33769 |
| Pseudo-out (Balance) | a48372c7c72e49375371c21db6f659c6129b33c1a11f12b2a82f4fec7ddb9b5f |
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)