What we shipped.

After your master is ready, compare versions side by side, level-matched and switched without a gap. Professional gets Balanced and Fuller; Studio gets Gentler, Balanced and Fuller. Each is a short excerpt rendered through the same chain as your export, and the version you pick is the one delivered.

Three Stripe endpoints (checkout / portal / verify) consolidated into one dispatcher with URL-rewrite preservation. 13→10 functions. Real-tier checkout proven live with a fresh cs_live_ session.

Active 7-band spectral alignment to your chosen reference fingerprint. Per-band correction capped at ±3 dB; total tilt budget ±2 dB. Intensity slider 0–100%. Premium tier.

Milestone block (first paid release · April 2026), live stats counter, About / Founder page, Welcome-drip Google-OAuth fix that closes the prior cold-signup gap.

M/S Spectral Comp, Spectral De-Ess, Per-Stem Mastering all retuned against Pro-MB / FabFilter Pro-DS / engineer conventions. Slower attacks, wider knees, narrower de-ess band, transient-preserve drums.

Album LUFS normalization · M/S Spectral Compression · Spectral De-Ess · AI preset suggestion on upload · Per-stem mastering with stem-aware treatments. All premium-tier-gated, all harness-tested.

Subtle dynamic contrast on quieter sections (verse-like). Bounded ≤ -0.4 dB attenuation, never boosts. Skips short tracks and flat material automatically.

Studio tier exports can render at 192 kHz internal sample rate for audiophile-grade headroom.

Live LUFS / true-peak / LRA delta vs the master, so you can see how each codec affects loudness before you ship.

Wannamaker 5-tap noise-shaped dither at 16-bit reduce quantization noise where the ear is least sensitive.

One export, three deliverables: 24-bit/192k vinyl master, 24-bit/96k streaming master, 16-bit/44.1k CD master.

Premium tier renders at 4× oversampled 192 kHz internally before downsampling, for cleaner anti-aliasing and harmonic accuracy.

Lookahead limiter and harmonic exciter run at 4× oversampling to suppress aliasing artifacts in the audible band.

Live mastering chain biases EQ + dynamics toward the chosen reference fingerprint, bounded and reversible.

Reference Match sidebar wired to the 16-genre fingerprint library — pick a genre, instant target spectrum.

102 reference fingerprints across 16 genres (75 deep-Tidal captures + 27 online) shipped as the foundation for every reference-target feature that follows.

Stem separation API now requires authentication. Rate limits persisted across regional cold starts so abuse can't be bypassed by hopping edge nodes.

First independent artist takes a master through the full LuvLang chain. The platform is open for business.

M/S processing, Console Emulation, export-format locks, and stems resume — all hardened against tier-spoofing or silent failure modes.

Every successful export now writes a permanent mastering_history row, so we can prove what shipped to whom.