# kaal:claim:3405401-028

**Claim.** Until blockchain technology was introduced via bitcoin in 2009, decentralized reputation systems mostly relied on the old and corruptible concept of the Web of Trust.

**Type.** failure  **Support.** asserted

**Holds when.**

- period before 2009

**Source quote.**

> Until blockchain technology was introduced via bitcoin in 2009, decentralized reputation system mostly relied on the old and corruptible concept of the Web of Trust.

**From.** Wulf A. Kaal, *Decentralized Commerce – A Primer on Why Decentralized Reputation Verification Systems Are Needed* (2019), VI. Decentralized Reputation as the Solution, page 8

**Cite as.** Wulf A. Kaal, Decentralized Commerce – A Primer on Why Decentralized Reputation Verification Systems Are Needed (2019). SSRN: https://ssrn.com/abstract=3405401

**Verify.** sha256 of source PDF `bc2d6f0ddc0852fb4085c4543c7c1dec19aaf8745eb67e3acc637e552bd7fb7d` at https://raw.githubusercontent.com/wulfkaal/Academic-Papers/main/papers/pdf/Kaal%20-%202019%20-%20Decentralized%20Commerce%20%E2%80%93%20A%20Primer%20on%20Why%20Decentralized%20Reputation%20Verification%20Systems%20Are%20Needed.pdf

**Failure mode.** corruptible-web-of-trust  (family: reputation-system-gaming)

**Topics.** reputation, blockchain

**Keywords.** web-of-trust, reputation, blockchain, history

**Related claims.**

- restated_by: https://wulfkaal.github.io/claims/3411897-035
- restates: https://wulfkaal.github.io/claims/3266953-033

**Canonical form.** This markdown file is the canonical hashed representation of the claim. Its sha256 is the content hash used for attestation.