Pith Number

pith:7NHGKJVM

pith:2026:7NHGKJVMI4HVY2EKDYR5R2YXRC

not attested not anchored not stored refs pending

Sample Variance Cancellation for Future Spectroscopic Surveys

James M. Sullivan, Martin White

arxiv:2608.07339 v1 · 2026-08-07 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7NHGKJVMI4HVY2EKDYR5R2YXRC}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-08-10T01:15:04.283634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb4e6526ac470f5c688a1e23d8eb1788bcaed27d2bda61b190458f07f3f7c7e6

Aliases

arxiv: 2608.07339 · arxiv_version: 2608.07339v1 · doi: 10.48550/arxiv.2608.07339 · pith_short_12: 7NHGKJVMI4HV · pith_short_16: 7NHGKJVMI4HVY2EK · pith_short_8: 7NHGKJVM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7NHGKJVMI4HVY2EKDYR5R2YXRC \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fb4e6526ac470f5c688a1e23d8eb1788bcaed27d2bda61b190458f07f3f7c7e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f38791a68e9e5a8c1f0f2b6437150f289bf7e05b94e21accf4c47ef251c619db",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-08-07T15:36:28Z",
    "title_canon_sha256": "3390dd706bc8ed813e23600d01bdf323d91e326bb9affa9c32ac4a4f269a3d35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.07339",
    "kind": "arxiv",
    "version": 1
  }
}