Pith Number

pith:PM5WICM4

pith:2010:PM5WICM4S2G6T55LB73AZSX3VV

not attested not anchored not stored refs pending

The Evolution of Quasar CIV and SiIV Broad Absorption Lines Over Multi-Year Time Scales

Donald P. Schneider, Paul C. Hewett, Robert R. Gibson, S. C. Gallagher, W. N. Brandt

arxiv:1003.5600 v1 · 2010-03-29 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PM5WICM4S2G6T55LB73AZSX3VV}

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	2026-05-18T02:08:16.056406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b3b64099c968de9f7ab0ff60ccafbad7fad21c854f1a9ba911b5fdd4456284b

Aliases

arxiv: 1003.5600 · arxiv_version: 1003.5600v1 · doi: 10.48550/arxiv.1003.5600 · pith_short_12: PM5WICM4S2G6 · pith_short_16: PM5WICM4S2G6T55L · pith_short_8: PM5WICM4

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/PM5WICM4S2G6T55LB73AZSX3VV \
  | 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: 7b3b64099c968de9f7ab0ff60ccafbad7fad21c854f1a9ba911b5fdd4456284b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0270eccaa4e381980ccb69b859f4c989a00181b8700adeeeb1db139c74653240",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-29T16:30:01Z",
    "title_canon_sha256": "c1212124796173f1dfcf2a4f66a843b9bcd104011f27c42f2a7c65c0d4cf109d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.5600",
    "kind": "arxiv",
    "version": 1
  }
}