Pith Number

pith:VKMRERR4

pith:2010:VKMRERR4NEYGGGSQNUMBOOUMD6

not attested not anchored not stored refs pending

A Deep Chandra X-ray Spectrum of the Accreting Young Star TW Hydrae

A. K. Dupree (CfA), G. J. M. Luna (CfA), N. S. Brickhouse (CfA), S. R. Cranmer (CfA), S. Wolk (CfA)

arxiv:1001.0750 v1 · 2010-01-05 · 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{VKMRERR4NEYGGGSQNUMBOOUMD6}

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	2026-05-18T02:10:04.789256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa9912463c6930631a506d18173a8c1fa8850d5234f5e584d74246088ba1dfda

Aliases

arxiv: 1001.0750 · arxiv_version: 1001.0750v1 · doi: 10.48550/arxiv.1001.0750 · pith_short_12: VKMRERR4NEYG · pith_short_16: VKMRERR4NEYGGGSQ · pith_short_8: VKMRERR4

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/VKMRERR4NEYGGGSQNUMBOOUMD6 \
  | 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: aa9912463c6930631a506d18173a8c1fa8850d5234f5e584d74246088ba1dfda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "542c1576e1ad8d99b7e43c6e244ec22fe103b5e40a931503f079f01dc3895f86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-01-05T19:34:32Z",
    "title_canon_sha256": "b9c27bfa80c607db2d122378deec506d0884a6f29ab8ea7991c773b0a3f9d834"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.0750",
    "kind": "arxiv",
    "version": 1
  }
}