Pith Number

pith:C442QFUK

pith:2013:C442QFUKPKJOB5YTRML2L43MSQ

not attested not anchored not stored refs pending

On the Redshift of the Very High Energy Blazar 3C 66A

Amy Furniss, Charles Danforth, David A. Williams, Jason X. Prochaska, Michele Fumagalli

arxiv:1302.2948 v1 · 2013-02-12 · 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{C442QFUKPKJOB5YTRML2L43MSQ}

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	2026-05-18T01:51:41.933042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1739a8168a7a92e0f7138b17a5f36c94236daddba0cda7162ae4e34e36d8ccfa

Aliases

arxiv: 1302.2948 · arxiv_version: 1302.2948v1 · doi: 10.48550/arxiv.1302.2948 · pith_short_12: C442QFUKPKJO · pith_short_16: C442QFUKPKJOB5YT · pith_short_8: C442QFUK

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/C442QFUKPKJOB5YTRML2L43MSQ \
  | 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: 1739a8168a7a92e0f7138b17a5f36c94236daddba0cda7162ae4e34e36d8ccfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23293fc9c138d5ebba1712c2cc9cb521f4abceb1915206eb83840ed62954350a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-12T23:22:25Z",
    "title_canon_sha256": "8b5b5a57bb243194a734e530a54c37cdda0acb3b1d3c2cd357a5082871cc4cf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2948",
    "kind": "arxiv",
    "version": 1
  }
}