Pith Number

pith:DS4DV3KA

pith:2012:DS4DV3KAGAHVWGKE2R7KFNM6OV

not attested not anchored not stored refs pending

On time variability and other complications in studying the UV broad absorption lines of quasars: results from numerical simulations of radiation driven disk winds

Daniel Proga, Fred Hamann, Paola Rodr\'iguez Hidalgo

arxiv:1201.3606 v1 · 2012-01-17 · 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{DS4DV3KAGAHVWGKE2R7KFNM6OV}

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	2026-05-18T04:04:28.798749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cb83aed40300f5b1944d47ea2b59e7557a954c957a2aebdf8bb9b5c1b6794df

Aliases

arxiv: 1201.3606 · arxiv_version: 1201.3606v1 · doi: 10.48550/arxiv.1201.3606 · pith_short_12: DS4DV3KAGAHV · pith_short_16: DS4DV3KAGAHVWGKE · pith_short_8: DS4DV3KA

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/DS4DV3KAGAHVWGKE2R7KFNM6OV \
  | 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: 1cb83aed40300f5b1944d47ea2b59e7557a954c957a2aebdf8bb9b5c1b6794df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5fa4479ebc80c925e26698b369f806c9f42d0c30ccd3c82e3255090d884a044",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-17T20:13:01Z",
    "title_canon_sha256": "398a0d20284c7ddad5282fdc9056541d628d7ccb03eaa95d7257d6f053fe04f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3606",
    "kind": "arxiv",
    "version": 1
  }
}