Pith Number

pith:TOHLF6NP

pith:2009:TOHLF6NPURNUSHTPQHR2YEMUGN

not attested not anchored not stored refs pending

Chromospheric Variability in SDSS M Dwarfs. II. Short-Timescale H-alpha Variability

C. P. Loomis, D. J. Schlegel (LBNL), E. A. Kruse, E. Berger (Harvard), G. R. Knapp, J. E. Gunn, R. H. Lupton (Princeton)

arxiv:0911.2712 v1 · 2009-11-13 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TOHLF6NPURNUSHTPQHR2YEMUGN}

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	2026-05-18T02:34:05.461498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b8eb2f9afa45b491e6f81e3ac1194336d092ec782ec28cb678a066d3938f2d8

Aliases

arxiv: 0911.2712 · arxiv_version: 0911.2712v1 · doi: 10.48550/arxiv.0911.2712 · pith_short_12: TOHLF6NPURNU · pith_short_16: TOHLF6NPURNUSHTP · pith_short_8: TOHLF6NP

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/TOHLF6NPURNUSHTPQHR2YEMUGN \
  | 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: 9b8eb2f9afa45b491e6f81e3ac1194336d092ec782ec28cb678a066d3938f2d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7b498f676422ea19d3f5997705881823f88c662cdbf8e1c079dda08724f1167",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-13T21:27:01Z",
    "title_canon_sha256": "6fcd9af55ab5e234a3733e36e4053bbb69c37dc471505ecfc35024a1b13562cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2712",
    "kind": "arxiv",
    "version": 1
  }
}