Transaction Details
| TX Hash | 9ff5bf7a629ea6e53b4ce93ac99067b8392599f42f15541373e919ad19f9f8e4 |
| Block | 115,631 |
| Timestamp | Wed, 06 May 2026 05:26:20 GMT (2d ago) |
| Confirmations | 1,863 |
| 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) | 6f9422b898110d01e89f647913deaa2acc4bed8f920b6cf062ca24f3e259cde8 |
| Pedersen Commitment (C) | b13d022aed8bfea6bc0aaf5e5c08487c51f1cef46b0c35b1f0d541533db29ce3 |
| View Tag | be |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | dfd411b340cb33872bb9371a71c5ec2a601edfd6f2aca4bfa7c7a8e09eea0ca7 |
| Pedersen Commitment (C) | e53939894d991d197f792f2f5c32a7a081514c70a9b56cc9db429af21cc2c155 |
| View Tag | ad |
| 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 | 79690c58db1180c13b10685031495b32fbad97acd52c02a24d49a6a9836dc282 |
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) | efdc2e28d843eaf70ab4e7012a8f30fb029f51dfffd768ce532ef094010aee80 |
| C̃ (Pseudo-output) | bfab8c90f5af7c0b032867575ad20c9057730831e77d05541408393b28a7e621 |
| Pseudo-out (Balance) | ac5557d6b23d60fb80d1ef2b8e2ae1ffb3860cfb8769e69b1f136f6d6fb2efd7 |
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) | a0af5f1c1f4dedbbd0cd2eba27668064351f05601fd68ee21ec996a73c34db43 |
| C̃ (Pseudo-output) | b75d57b82b38cca34894ae6fe043f5569f526038b2db970fdcf77f4e2bf6810a |
| Pseudo-out (Balance) | 1c19068d88b08e42d78dac39c0a7c6862ef73bbe9831dbf8eb84c387b5fcf279 |
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)