Pith Number

pith:33VPHFE7

pith:2009:33VPHFE7LICCMJKWYKDM3IVAJD

not attested not anchored not stored refs pending

Spectro-Perfectionism: An Algorithmic Framework for Photon Noise-Limited Extraction of Optical Fiber Spectroscopy

Adam S. Bolton (Utah), David J. Schlegel (LBL)

arxiv:0911.2689 v2 · 2009-11-13 · astro-ph.IM · 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{33VPHFE7LICCMJKWYKDM3IVAJD}

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.

Cited by

1 paper in Pith

Astro2020 APC White Paper: The MegaMapper: a z > 2 spectroscopic instrument for the study of Inflation and Dark Energy

Receipt and verification

First computed	2026-05-18T02:10:47.827693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

deeaf3949f5a04262556c286cda2a048c421a7db22f078633b9a5311cf5a7073

Aliases

arxiv: 0911.2689 · arxiv_version: 0911.2689v2 · doi: 10.48550/arxiv.0911.2689 · pith_short_12: 33VPHFE7LICC · pith_short_16: 33VPHFE7LICCMJKW · pith_short_8: 33VPHFE7

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/33VPHFE7LICCMJKWYKDM3IVAJD \
  | 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: deeaf3949f5a04262556c286cda2a048c421a7db22f078633b9a5311cf5a7073

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad053cb248baeb239c50b882936eae975472c8f1ccf018c2eec6845b0bf41c00",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-11-13T20:23:06Z",
    "title_canon_sha256": "eb2bdabe53b65bb72ceebc16df81a655d638047d586eeaadfbb4f8f55add6786"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2689",
    "kind": "arxiv",
    "version": 2
  }
}