Transaction Details
| TX Hash | 7708e7c6baf9c43aedf19538943df7101b6977fc4aaa2dd6f781342436aea621 |
| Block | 116,294 |
| Timestamp | Wed, 06 May 2026 22:33:46 GMT (3d ago) |
| Confirmations | 2,499 |
| 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) | dde2e8e0b6c793b84067af2ad7c4ef04708805b13f5702b00c2a330e37fa6567 |
| Pedersen Commitment (C) | 02dee4b2fd0c35bedf224cbb2bdc8b6fd11d02d7e281468bb43b90fc95806445 |
| View Tag | e8 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 0b1007bbbc283d51843532646aedbd266db4981138885f864343305946b2baf1 |
| Pedersen Commitment (C) | 824939de95bb629ec563d27b86f11ea920dd3de3a7840d0f4f8c14f09a491054 |
| View Tag | 37 |
| 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 | 18cc1fac6b7a33ba23151665336d5baa88005ad0ccbbe662cdd3d82c209c01d7 |
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) | 269ecbba2f6d17c213c88a72e7e4ffc61e461eda209f9372693802978c43aec7 |
| C̃ (Pseudo-output) | 70cfe906451c0ea1f2adaf9838019c9521b4339836ab15981f8b26c96285d866 |
| Pseudo-out (Balance) | 799962667d1e3ebff09ed82dc6ebad464ae85daaa1ec6ba891d51e466c305061 |
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)