Go to Dashboard → Track Vault.

Track Vault is a secure place to store and share unreleased or exclusive audio (demos, stems, reference tracks, anything not ready for streaming platforms). Every copy a recipient plays or downloads is watermarked to that person, so a leak traces back to them.

Plan required: Pro or Lifetime to share. Free artists can receive.

Collections

A collection is what you share: a single track or an EP/album of up to 20 tracks, with one cover, one access mode and one delivery format (WAV or MP3 320).

Go to Dashboard → Track Vault → Outgoing
Click Upload, add a title, a cover and your tracks (MP3, WAV or FLAC)
Pick the access mode: Stream only, Download by approval, or Purchase to unlock (set a price)
Pick what happens to New tracks (see below)

Sharing

Send invite → Username: a BCKSTG account gets it in their Vault inbox
Send invite → Email: anyone gets a link; they confirm with a 6-digit PIN and stay signed in for 30 days
Generate link (purchase mode): the buyer pays to unlock

Each share can expire (never, 7 or 30 days). Every share shows its status and plays and, under Tracks, what that person played or downloaded and when. An expired link reads "Link expired"; use Resend or create a new share.

Adding tracks later

Click Add tracks on a collection you already shared. Nothing new to send: the New tracks setting on the collection decides who gets them.

New shares only (default): people who already have the collection never see tracks you add later. Only shares you create after adding include them.
Everyone with access gets them: every recipient's existing link gains the track, watermarked to them, and they get an email (and an in-app notification if they have a BCKSTG account). Buyers of a purchase collection see "Includes every track added to this collection later" at checkout, so this is the way to sell a growing package.

A recipient's copy is made the first time they play or download the new track (they see "Preparing your copy" for a moment). Adding a track to a collection with forty recipients costs nothing until someone listens. Changing the setting applies to tracks added from then on; nothing a recipient already has is taken away.

Replacing a track's audio

Click Replace audio on a track to upload a new version. Everyone who has the track gets the new version on their next play or download, marked to them again. The copies already sent stay on file, so a leak of the old version still traces.

Leak Trace

If you suspect a file leaked, open Dashboard → Track Vault → Leak Trace and upload it. BCKSTG identifies which recipient's copy it is, and which track and version.

Deactivate, delete, revoke

Deactivate blocks playback and new shares until you reactivate
Delete removes the collection from your dashboard and blocks playback; the watermarks, share rows and audit trail stay so Leak Trace still works
Revoke on a share locks that one person out right away

Notes

Watermarking happens automatically; there is nothing to configure
Files are stored privately and never indexed
Nothing from your Vault appears on your public page