SCI Transparency Center
SCI 1.5, simply explained.
Current release
SCI-1.5.0
Collector significance, independently evidenced.
27.4%
Coverage
142
Scored models
84
Changes ≥5
16
Published
SCI framework
75%
Collector core
Rarity · significance · relevance
Scarcity
25%
Collector significance
25%
Future relevance
25%
25%
Market layer
Historical performance
5%
Demand & momentum
5%
Liquidity
5%
Price resilience
5%
Supply dynamics
5%
Methodology details
Scarcity
25%
Source-backed production volume, series limitation and exact-variant rarity.
Collector significance
25%
Historical relevance, halo status, homologation or motorsport lineage, and the model’s place in collector history.
Future relevance
25%
Long-term irreplaceability and relevance derived from era, engineering, drivetrain character and model significance.
Historical performance
5%
Observed multi-year performance derived only from qualified completed-sale evidence.
Demand & momentum
5%
Observed transaction direction, demand signals and sufficiently qualified current-market evidence.
Liquidity
5%
Depth and diversity of qualified sale and asking-price evidence. Thin trading is not treated as weak collectability.
Price resilience
5%
Price dispersion and resilience across comparable market observations.
Supply dynamics
5%
Observed inventory, sell-through evidence and source-backed sold-out or supply-pressure signals.
Numeric SCI requires 30% weighted source-backed factor coverage. SCI and Evidence Confidence remain separate.
SCI 1.4 → 1.5
Release impact.
132 of 136 changed
95
Up
37
Down
+2.51
Average Δ
+26
Largest gain
Coverage
142 / 518
Version history
SCI-1.5.0Collector significance, independently evidenced.
SCI 1.5 separates structural collectibility from evidence confidence. Scarcity, collector significance and future relevance form 75% of the collector score; observable market factors form 25%. Thin public-market evidence therefore reduces Confidence before it suppresses intrinsic collector quality.
SCI-1.4.0Evidence-gated factor scoring.
Introduced source-backed factor coverage, a 30% numeric-score gate and a stronger firewall between structural collector evidence and transaction-only market evidence.
SCI-1.3.0Confidence separated from score.
Made evidence confidence a distinct published measure so incomplete samples could no longer be hidden behind the collector score.
SCI-1.2.1Market evidence baseline.
Established the first versioned SCI market-data baseline, transaction gates and research-state publication model.
Versioned releases · append-only history · no hidden score fallback.
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