Pith Number

pith:O7ZHWHVP

pith:2011:O7ZHWHVPJUG6P4K2W2JOQKGD4H

not attested not anchored not stored refs pending

Contemporaneous VLBA 5 GHz Observations of LAT-Detected Blazars

Anthony C.S. Readhead, Gregory B. Taylor, Joseph F. Helmboldt, Joseph L. Richards, Justin D. Linford, Rodrigo Reeves, Roger W. Romani

arxiv:1111.4505 v1 · 2011-11-18 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O7ZHWHVPJUG6P4K2W2JOQKGD4H}

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	2026-05-18T01:59:29.035538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77f27b1eaf4d0de7f15ab692e828c3e1db02aee38f76155e298b45ca29744b3d

Aliases

arxiv: 1111.4505 · arxiv_version: 1111.4505v1 · doi: 10.48550/arxiv.1111.4505 · pith_short_12: O7ZHWHVPJUG6 · pith_short_16: O7ZHWHVPJUG6P4K2 · pith_short_8: O7ZHWHVP

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/O7ZHWHVPJUG6P4K2W2JOQKGD4H \
  | 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: 77f27b1eaf4d0de7f15ab692e828c3e1db02aee38f76155e298b45ca29744b3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3afad815a9e8fd9e2c15300de51dd2c1e508e52df4a9de5ee11d09ac2210191f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-18T22:02:16Z",
    "title_canon_sha256": "43fc7d230b63c6376e3b42422af9bb208678feb384d4ec8bd63e045eb29682ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4505",
    "kind": "arxiv",
    "version": 1
  }
}