Pith Number

pith:74RPYPPR

pith:2003:74RPYPPRPEUCSL2GJEKT5IRUTT

not attested not anchored not stored refs pending

A Systematic Study of X-Ray Flares from Low-Mass Young Stellar Objects in the Rho Ophiuchi Star-Forming Region with Chandra

H. Nakajima, K. Imanishi, K. Koyama, M. Tsujimoto, Y. Tsuboi

arxiv:astro-ph/0305170 v1 · 2003-05-10 · 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{74RPYPPRPEUCSL2GJEKT5IRUTT}

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	2026-05-18T01:40:38.917154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff22fc3df17928292f4649153ea2349cec81f9c93632b4efb5461e2c3e6120e9

Aliases

arxiv: astro-ph/0305170 · arxiv_version: astro-ph/0305170v1 · doi: 10.48550/arxiv.astro-ph/0305170 · pith_short_12: 74RPYPPRPEUC · pith_short_16: 74RPYPPRPEUCSL2G · pith_short_8: 74RPYPPR

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/74RPYPPRPEUCSL2GJEKT5IRUTT \
  | 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: ff22fc3df17928292f4649153ea2349cec81f9c93632b4efb5461e2c3e6120e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca3e6b4e8c072c4d29070ea1096e2c20bf2c91a13ba925a2361b035af15f9c51",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-10T13:59:04Z",
    "title_canon_sha256": "a6a0003b5e5df46b5dc4b3e3fd86c0b82eb2399674c3c7f3f121b04f8fc32a40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305170",
    "kind": "arxiv",
    "version": 1
  }
}