Pith Number

pith:I6Q3QJT3

pith:2010:I6Q3QJT3SQ4POVLSNGBF323YHS

not attested not anchored not stored refs pending

The Redshifted Excess in Quasar C IV Broad Emission Lines

Brian Punsly

arxiv:1002.4681 v1 · 2010-02-25 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I6Q3QJT3SQ4POVLSNGBF323YHS}

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	2026-05-18T02:08:57.052569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47a1b8267b9438f7557269825deb783c9fec2f9623653b3125807677b2ffad3c

Aliases

arxiv: 1002.4681 · arxiv_version: 1002.4681v1 · doi: 10.48550/arxiv.1002.4681 · pith_short_12: I6Q3QJT3SQ4P · pith_short_16: I6Q3QJT3SQ4POVLS · pith_short_8: I6Q3QJT3

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/I6Q3QJT3SQ4POVLSNGBF323YHS \
  | 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: 47a1b8267b9438f7557269825deb783c9fec2f9623653b3125807677b2ffad3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cd6c272f58b72b8444a61b86770629f071e99598212e05401e8a0697e15fe72",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-25T02:32:36Z",
    "title_canon_sha256": "85a8360e5520d3075ecbd6e80b8c3404a2c9630a2c36f8162257dccd71046b4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4681",
    "kind": "arxiv",
    "version": 1
  }
}