Source Mesh

Source coverage

One instrument → many observers → one canonical market state. Market Atlas does not trust a quote: it observes the market through independent paths, counts source families (not URLs), and publishes the consensus with the evidence. This page measures that redundancy and lists where it is still thin.

How it is computed →

Source redundancy

Source coverage →

31of 235 quoted instruments observed through ≥ 2 independent source families

9 ≥ 5 sources16 ≥ 36 2199 single source

Weighted redundancy score64.1%

Tier A majors covered: 6 / 28
Tier B liquid covered: 25 / 128
Proxies confirming: 9
Validators confirming: 0

Redundancy targets by tier

major

≥3 independent families, 5 observations (majors)

6 / 28

21.4% covered

liquid

≥2 families, 3 observations (liquid)

25 / 128

19.5% covered

long tail

1 family, 2 observations (long tail)

61 / 61

100.0% covered

official reference

official single source acceptable (reference rates)

18 / 18

100.0% covered

By asset class

quoted instruments · share observed by ≥ 2 families · mean independent families

Asset class	Quoted	Multi-source	Share	Mean families
ETF	16	0	0%	1.00	queue →

Source expansion queue

16instruments below their redundancy target, most valuable gaps first (tier weight × missing families)

Tierall A B C DClassall ETF

#	Instrument	Tier	Families / target	Missing	Observations	Proxies · validators	Class	Status	Score
1	QQQInvesco QQQ Trust	A	1 / 3	−2	3	0 · 0	ETFlive class	single source	43
2	SPYSPDR S&P 500 ETF Trust	A	1 / 3	−2	3	0 · 0	ETFlive class	single source	43
3	DIASPDR Dow Jones Industrial Average ETF Trust	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
4	EEMiShares MSCI Emerging Markets ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
5	EFAiShares MSCI EAFE ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
6	GLDSPDR Gold Shares	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
7	HYGiShares iBoxx $ High Yield Corporate Bond ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
8	IBITiShares Bitcoin Trust ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
9	IWMiShares Russell 2000 ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
10	SLViShares Silver Trust	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
11	TLTiShares 20+ Year Treasury Bond ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
12	USOUnited States Oil Fund	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
13	VTIVanguard Total Stock Market ETF	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
14	XLEEnergy Select Sector SPDR Fund	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
15	XLFFinancial Select Sector SPDR Fund	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68
16	XLKTechnology Select Sector SPDR Fund	B	1 / 2	−1	3	0 · 0	ETFlive class	single source	68

A family is a group of sources believed to share an upstream (declared, or inferred statistically). Proxies (stablecoin markets, crosses) and validators (restricted-rights sources) confirm a value but never count as independent families. Score = 65 % family attainment + 35 % observation attainment.

Likely shared upstreams

pairs of sources whose values coincide within 2 s on ≥ 92 % of ≥ 120 aligned samples — counted as one family

No pair of sources currently looks like a shared upstream. The lineage engine recomputes every five minutes from live observations.

Quoted instruments

235

≥ 3 families

Tier-A target

≥ 5 families

most observed

No fresh source

last known value shown as stale