aid: earn
name: Earn
description: >-
  Earn.com (formerly 21 Inc / 21.co) was a cryptocurrency startup that let people
  earn Bitcoin by replying to paid messages and completing microtasks, effectively
  a paid-email and paid-task marketplace settled in crypto. Founded by Balaji
  Srinivasan and backed by DCVC among others, the company was acquired by Coinbase
  in April 2018 (Coinbase, ticker COIN) and folded into the Coinbase Earn product.
  The independent earn.com property no longer operates a standalone product or
  developer surface: earn.com now issues a 301 redirect to coinbase.com/earn, and
  earlier hosts such as 21.co and api.earn.com no longer resolve. This profile is
  retained in the API Evangelist network as an acquired-company record; there is no
  independent, first-party API, developer portal, or OpenAPI to enrich.
url: https://raw.githubusercontent.com/api-evangelist/earn/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcvc
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: coinbase
x-acquired-year: '2018'
x-former-names:
- 21 Inc
- 21.co
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Cryptocurrency
- Bitcoin
- Payments
- Acquired
- Coinbase
image: https://raw.githubusercontent.com/api-evangelist/earn/refs/heads/main/apis.yml
apis: []
common:
- type: DomainSecurity
  url: security/earn-domain-security.yml
- type: Website
  url: https://earn.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence