Pith Number

pith:DVLVHN7W

pith:2011:DVLVHN7WPPNVD75JRIEFYJPUFZ

not attested not anchored not stored refs pending

The Optical Properties of PKS 1222+216 During the Fermi Mission

(2) National Science Foundation, (3) NOAO, B. T. Jannuzi (3) ((1) Steward Observatory, G. D. Schmidt (2), Kitt Peak National Observatory), P. S. Smith (1), University of Arizona

arxiv:1110.6040 v1 · 2011-10-27 · 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{DVLVHN7WPPNVD75JRIEFYJPUFZ}

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	2026-05-18T04:10:09.845640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d5753b7f67bdb51ffa98a085c25f42e7d9a5041ce395ce02f671e18e3cd6394

Aliases

arxiv: 1110.6040 · arxiv_version: 1110.6040v1 · doi: 10.48550/arxiv.1110.6040 · pith_short_12: DVLVHN7WPPNV · pith_short_16: DVLVHN7WPPNVD75J · pith_short_8: DVLVHN7W

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/DVLVHN7WPPNVD75JRIEFYJPUFZ \
  | 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: 1d5753b7f67bdb51ffa98a085c25f42e7d9a5041ce395ce02f671e18e3cd6394

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d66a8e70d7c5ed561d97a1d56eacdf0dd3128d5c5fa4948a6fae0e8874420880",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-10-27T10:33:45Z",
    "title_canon_sha256": "3888ca5577cff9e723313ad3f9ef26bb4d136276551bae65b2e2073acdb4e5e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.6040",
    "kind": "arxiv",
    "version": 1
  }
}