Transaction Details
| TX Hash | c7b6b5a5b2364511f9d9ead8981847d6749d5a7571c73496c86277fbfbfbf2bd |
| Block | 116,263 |
| Timestamp | Wed, 06 May 2026 20:51:48 GMT (3d ago) |
| Confirmations | 2,412 |
| 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) | c9b1fc33721d2431a4c07994c6c940760544b1f795c74aa4c1d0aec7acc4465f |
| Pedersen Commitment (C) | c0f53f256a631e2776315a6a6687184ed5dfd836828ef595299254ed2fa187cd |
| View Tag | 01 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 7e113393975bd176b6c437a50d2dda57075941f93e782b5c6871d13938199260 |
| Pedersen Commitment (C) | ac92d79aab0ba467d88f505dbbdb8fc78de9eba711be1b64ed68c1f3063856e8 |
| View Tag | bb |
| 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 | 57c87141e83f758a37d28a82fdabd31b1691d5989ddf5a163b756c1570049121 |
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) | b0692923374acb261ea3fdeaa2354c47993a17ac92974929417cf1c86d6289c6 |
| C̃ (Pseudo-output) | c901c849d21c3317f9bdf7e604c9b86bbf7f538a6b57b39296beeb2a0e74fb78 |
| Pseudo-out (Balance) | 1cc4baf5efdda60b227667ff16d82ee9e1e536be8a9656491da346d2f4886495 |
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)