Pith Number

pith:PNDUVLXZ

pith:2008:PNDUVLXZG3HF7JQISX5QV3HDVG

not attested not anchored not stored refs pending

VSOP Observations of the Blazar S5 2007+77

A. Kraus, A. Witzel, J.A. Zensus, K. E. Gabanyi, T. P. Krichbaum

arxiv:0802.0540 v1 · 2008-02-05 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PNDUVLXZG3HF7JQISX5QV3HDVG}

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	2026-05-18T03:12:23.065869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b474aaef936ce5fa60895fb0aece3a988fe3bfd964e10904920c1a44b61b44b

Aliases

arxiv: 0802.0540 · arxiv_version: 0802.0540v1 · doi: 10.48550/arxiv.0802.0540 · pith_short_12: PNDUVLXZG3HF · pith_short_16: PNDUVLXZG3HF7JQI · pith_short_8: PNDUVLXZ

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/PNDUVLXZG3HF7JQISX5QV3HDVG \
  | 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: 7b474aaef936ce5fa60895fb0aece3a988fe3bfd964e10904920c1a44b61b44b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df6310fee71efef91d61ade9f559415a2165f5a32df0aa0c58716767764ff79b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-02-05T01:26:07Z",
    "title_canon_sha256": "30df00eb45508ec2ad4994b35a91c9abde63d21f1b623bc3cb56dd66bf8e9005"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.0540",
    "kind": "arxiv",
    "version": 1
  }
}