Pith Number

pith:UMH4K6VA

pith:2014:UMH4K6VA7FBLKS224WZEOQTPYT

not attested not anchored not stored refs pending

Relativistic redshifts in quasar broad lines

(2) Carnegie Observatories, (3) University of California, (4) Harvard-Smithsonian Center for Astrophysics), Abraham Loeb (4) ((1) Institute for Advanced Study, Los Angeles, Princeton, Scott Tremaine (1), Xin Liu (3), Yue Shen (2)

arxiv:1406.2468 v1 · 2014-06-10 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UMH4K6VA7FBLKS224WZEOQTPYT}

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	2026-05-18T01:43:00.719197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a30fc57aa0f942b54b5ae5b247426fc4da70e1defb265951ac57e78adf447092

Aliases

arxiv: 1406.2468 · arxiv_version: 1406.2468v1 · doi: 10.48550/arxiv.1406.2468 · pith_short_12: UMH4K6VA7FBL · pith_short_16: UMH4K6VA7FBLKS22 · pith_short_8: UMH4K6VA

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/UMH4K6VA7FBLKS224WZEOQTPYT \
  | 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: a30fc57aa0f942b54b5ae5b247426fc4da70e1defb265951ac57e78adf447092

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cabcdaf0f77a1f0bb2dcd8174f4b52aef360c0b77f06ca4b90e57c5f3d664fb6",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-06-10T08:39:46Z",
    "title_canon_sha256": "3629d688e07612e84263f388ea09aef765631c374d141a8b5e51e6ccc4857a7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.2468",
    "kind": "arxiv",
    "version": 1
  }
}