SiteList review score
Instant catalog search requires no signup and delivers immediate utility. Audience messaging lacks clear action steps, support details, and explicit pricing context.
Reviewed on Aug 27, 2026
Show HN: Check if any of the $656M in unclaimed royalties at The MLC is yours
doub.ly
Unclaimed listingWhat it does
A web-based tool that checks Spotify links against The MLC's public bulk data to identify unregistered or unclaimed mechanical royalties and estimate potential revenue loss.
Two ratings
Verified user rating
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No verified reviews yet — the evidence locker is empty.
Screenshots
Captured during our latest review on Aug 27, 2026
Pricing details
Free, no signup required. Billed one time.
| Plan | Price | Details |
|---|---|---|
| Blackbox Checker | $0 one time per check | Instant catalog search with no signup. No signup required · Rough estimates only; not financial advice. View source |
Key features
Blackbox Checker
catalog analysis
Pastes a Spotify artist, album, or song link to identify unregistered or unclaimed recordings at The MLC.
Royalty Loss Estimation
financial estimation
Roughly calculates the financial impact of unclaimed mechanical royalties based on stream counts and US mechanical rates.
Who it’s for
Unclaimed Royalty Identification
Identifies which recordings in a catalog are unregistered or have unclaimed shares at The MLC to protect against market-share distribution.
Integrations
Spotify Web API
developer tools
Used to fetch catalog and streaming data for royalty checks against The MLC's public bulk data.
Buyer questions
Questions buyers actually ask
What is “black box” money?
Royalties for compositions that cannot be matched to their work or have unclaimed shares, which sit in an unallocated pool held by The MLC.
Product FAQ information · View source
The expert review
doub.ly earns an overall score of 82/100 for its tool helping creators check unclaimed royalties at The MLC. Its primary strength is exceptional usability with a barrier-free lookup, while messaging clarity and post-search guidance remain its main weaknesses.
82/100: strong utility, weak messaging
Verified user reviews
0 verifiedNo reviews yet. The evidence locker is empty.
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Reviews are from the SiteList community. Some reviewers received incentives — disclosed in the review, always. The verdict is never for sale.
Scores across 13 dimensions
Brand & experience
Performance
Content & editorial
Trust & decision surfaces
Search & discoverability
Docs & measurement
- Domain
- doub.ly
- Category
- Accounting
- Pricing
- Free · $0/mo
- Platforms
- web
- Last checked
- Aug 27, 2026
- Public dimensions
- 13
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