Pith Number

pith:CVTWORXL

pith:1999:CVTWORXLR4E6LDLUXCUIMWF7YK

not attested not anchored not stored refs pending

Quasi-periodic X-ray Flares from the Protostar YLW15

Katsuji Koyama, Kensuke Imanishi, Nicolas Grosso, Thierry Montmerle, Yohko Tsuboi

arxiv:astro-ph/9911373 v2 · 1999-11-19 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CVTWORXLR4E6LDLUXCUIMWF7YK}

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	2026-07-04T16:11:55.284297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15676746eb8f09e58d74b8a88658bfc2abe2e85c4fcf1459214ae3d72da5f30a

Aliases

arxiv: astro-ph/9911373 · arxiv_version: astro-ph/9911373v2 · doi: 10.48550/arxiv.astro-ph/9911373 · pith_short_12: CVTWORXLR4E6 · pith_short_16: CVTWORXLR4E6LDLU · pith_short_8: CVTWORXL

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/CVTWORXLR4E6LDLUXCUIMWF7YK \
  | 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: 15676746eb8f09e58d74b8a88658bfc2abe2e85c4fcf1459214ae3d72da5f30a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1a3fcd8899e1d00fe234609e0dde42d944f2426c1fb6b39f487a66187201de0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-19T19:28:38Z",
    "title_canon_sha256": "a99eec22ebc35c43a91395e2aba37b3169b86f55fbf940421c516b5e78692da3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911373",
    "kind": "arxiv",
    "version": 2
  }
}