Pith Number

pith:3EG6IYCH

pith:2013:3EG6IYCHYU6DQYCWQA2SPRYFJJ

not attested not anchored not stored refs pending

A High Resolution View of the Warm Absorber in the Quasar MR2251-178

D.M. Crenshaw, D. Porquet, E. Nardini, J. Gofford, J.N. Reeves, S.B. Kraemer, T.J. Turner, V. Braito

arxiv:1308.4550 v1 · 2013-08-21 · astro-ph.CO · 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{3EG6IYCHYU6DQYCWQA2SPRYFJJ}

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	2026-05-18T01:48:07.251473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d90de46047c53c386056803527c7054a57d58b0c7043e18f56e6858b2dd404b7

Aliases

arxiv: 1308.4550 · arxiv_version: 1308.4550v1 · doi: 10.48550/arxiv.1308.4550 · pith_short_12: 3EG6IYCHYU6D · pith_short_16: 3EG6IYCHYU6DQYCW · pith_short_8: 3EG6IYCH

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/3EG6IYCHYU6DQYCWQA2SPRYFJJ \
  | 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: d90de46047c53c386056803527c7054a57d58b0c7043e18f56e6858b2dd404b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "243a55b16ecf2428c5e77a855f35182a815c8b07476c53eb129aa183983b4c2f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-21T12:17:45Z",
    "title_canon_sha256": "1fd96bff8503089d47af268694b5f0529d66c3f3f23ae46c4a49ae87033b11bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4550",
    "kind": "arxiv",
    "version": 1
  }
}