Transaction Details
| TX Hash | 8f2ab44a96b43b64c50bf699e296eefc61e623561c5b070c41790e40ffcf836f |
| Block | 113,617 |
| Timestamp | Mon, 04 May 2026 19:35:35 GMT (4h ago) |
| Confirmations | 238 |
| 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) | e6c62ad1010c46f84eef1ad0956951e7b0955a5460411cce5db4a1e6c034b172 |
| Pedersen Commitment (C) | 82bfd5fbb7728da49fb45329bdded56e5f236b932247b672fcb8b95f7737d221 |
| View Tag | 4d |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 4e0fb0516c138ebb56834dd0723ba225c00843c3bbd0ae3e28fd81643ed2243e |
| Pedersen Commitment (C) | e211bde7e6d05a590908e4ab75726e5b2be366b6bb047a8f33cdd8ae9acf0bfd |
| View Tag | 25 |
| 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 | 2a39dbeb154e1392ad63934f3c6d70c50819168592130cfe12b062c506b29d3c |
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) | b74ced11685010e245dc1dc30820692e99c1908f1091183737565083dd2905e4 |
| C̃ (Pseudo-output) | 28652706c44a69ed8f5ef16c5c3d91e9433e7ed4dab0fa05daf6ed87160a0438 |
| Pseudo-out (Balance) | 83d4e0cacf09f7b7d76167cb6214b528abd04c2c93f54b9e39181172d8c56811 |
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) | 67627dbc1374bd4e4021d313834055fbd4ab2e8216440ec77deec31c00fbb8d9 |
| C̃ (Pseudo-output) | 30e22689b500a93c81999fcbba4c0c376b4e9edcdd8fc87fc27c0955d1757516 |
| Pseudo-out (Balance) | e69e8b16d31d38f262011c78c7f32855fe78a05da46f078fa8cd26f4da8240b6 |
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)