Pith Number

pith:Y5Y75Q7E

pith:2007:Y5Y75Q7ESTA7WS4MUZG73YHTQ4

not attested not anchored not stored refs pending

2MASS Reveals a Large Intrinsic Fraction of BALQSOs

Francesco Shankar, Gregory R. Sivakoff (Ohio State Univ.), Xinyu Dai

arxiv:0704.2882 v2 · 2007-04-22 · 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{Y5Y75Q7ESTA7WS4MUZG73YHTQ4}

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	2026-05-18T03:43:05.587769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c771fec3e494c1fb4b8ca64dfde0f38717898e0bd7eea4441032cdbb4380f71c

Aliases

arxiv: 0704.2882 · arxiv_version: 0704.2882v2 · doi: 10.48550/arxiv.0704.2882 · pith_short_12: Y5Y75Q7ESTA7 · pith_short_16: Y5Y75Q7ESTA7WS4M · pith_short_8: Y5Y75Q7E

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/Y5Y75Q7ESTA7WS4MUZG73YHTQ4 \
  | 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: c771fec3e494c1fb4b8ca64dfde0f38717898e0bd7eea4441032cdbb4380f71c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfc15d4cbafacb862255a94803cd60bb264e577a00f374e03d4f6f1c18a7798f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-22T13:31:20Z",
    "title_canon_sha256": "13aeeb04a7aa6c610b692e70bd26bbbee629b28a21cb37f072f0132e1aacc452"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2882",
    "kind": "arxiv",
    "version": 2
  }
}