Pith Number

pith:RE2425YH

pith:2009:RE2425YHLWKLGZJMEQHW7QRO3F

not attested not anchored not stored refs pending

Doppler Images and Chromospheric Variability of TWA 17

A. Collier Cameron, J.-F. Donati, J. R. Barnes, M. B. Skelly, W. A. Lawson, Y. C. Unruh

arxiv:0907.2777 v1 · 2009-07-16 · 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{RE2425YHLWKLGZJMEQHW7QRO3F}

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	2026-05-18T02:13:02.495436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8935cd77075d94b3652c240f6fc22ed9442b6378c353072868b4e3f13499e23e

Aliases

arxiv: 0907.2777 · arxiv_version: 0907.2777v1 · doi: 10.48550/arxiv.0907.2777 · pith_short_12: RE2425YHLWKL · pith_short_16: RE2425YHLWKLGZJM · pith_short_8: RE2425YH

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/RE2425YHLWKLGZJMEQHW7QRO3F \
  | 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: 8935cd77075d94b3652c240f6fc22ed9442b6378c353072868b4e3f13499e23e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d6062468674301ec57e7c0b0e398fccfb6a81791257593ae11027088955923c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-16T11:58:45Z",
    "title_canon_sha256": "53ebb6ba1e807177abda240b6be04773a463940c8ea13bea3184f6c1bed467af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2777",
    "kind": "arxiv",
    "version": 1
  }
}