Pith Number

pith:HCA7K6TW

pith:2013:HCA7K6TWDXG7P36Q2YS6MW6EGR

not attested not anchored not stored refs pending

Intrinsic brightness temperatures of blazar jets at 15 GHz

A. C. S. Readhead (Caltech), D. C. Homan (Denison U.), E. M. Leitch (Caltech), J. L. Richards (Purdue U.), K. Wiik (Turku U.), M. L. Lister (Purdue U.), T. Hovatta (Caltech), W. Max-Moerbeck (NRAO)

arxiv:1309.5368 v1 · 2013-09-20 · 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{HCA7K6TWDXG7P36Q2YS6MW6EGR}

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	2026-05-18T01:47:34.855246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3881f57a761dcdf7efd0d625e65bc4347c6d2279ff644d2fbbf4b9704749a9e2

Aliases

arxiv: 1309.5368 · arxiv_version: 1309.5368v1 · doi: 10.48550/arxiv.1309.5368 · pith_short_12: HCA7K6TWDXG7 · pith_short_16: HCA7K6TWDXG7P36Q · pith_short_8: HCA7K6TW

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/HCA7K6TWDXG7P36Q2YS6MW6EGR \
  | 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: 3881f57a761dcdf7efd0d625e65bc4347c6d2279ff644d2fbbf4b9704749a9e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa9ff9d150b05fcef39b9fa70649d27b79c3fa402aba21a561ae97293c224638",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-20T20:05:43Z",
    "title_canon_sha256": "506d4114dc9006a5a28c115d68ccc2ad2fa19967ba0c4b47ae01b21a45bcf6c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5368",
    "kind": "arxiv",
    "version": 1
  }
}