Pith Number

pith:XTIJ6XGH

pith:2007:XTIJ6XGH77POBSYCPZFRDDSBEF

not attested not anchored not stored refs pending

Results of Monitoring the Dramatically Variable C IV Mini-BAL System in the Quasar HS 1603+3820

Jane C. Charlton, Michael Eracleous, Nobunari Kashikawa, Toru Misawa

arxiv:astro-ph/0701661 v1 · 2007-01-23 · 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{XTIJ6XGH77POBSYCPZFRDDSBEF}

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	2026-05-18T04:29:06.964648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcd09f5cc7ffdee0cb027e4b118e41215f4a1e8f682ba8a935a1a3703e542fe9

Aliases

arxiv: astro-ph/0701661 · arxiv_version: astro-ph/0701661v1 · doi: 10.48550/arxiv.astro-ph/0701661 · pith_short_12: XTIJ6XGH77PO · pith_short_16: XTIJ6XGH77POBSYC · pith_short_8: XTIJ6XGH

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/XTIJ6XGH77POBSYCPZFRDDSBEF \
  | 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: bcd09f5cc7ffdee0cb027e4b118e41215f4a1e8f682ba8a935a1a3703e542fe9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90016ea7fe69a4a5708635c4c330a68b2292f18808f6e58016f861c8ba886c78",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-23T20:50:25Z",
    "title_canon_sha256": "d17edc4d818d30be52596adf32a26c1713843477a44ef6af7c0462642729249e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701661",
    "kind": "arxiv",
    "version": 1
  }
}