Pith Number

pith:M7U2QEQW

pith:2009:M7U2QEQW7OXVT7UDSE7NHE5R3T

not attested not anchored not stored refs pending

Optical Characteristics of the Astrometric Radio Sources

Oleg Titov, Zinovy Malkin

arxiv:0911.3216 v1 · 2009-11-17 · 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{M7U2QEQW7OXVT7UDSE7NHE5R3T}

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	2026-05-18T01:06:23.358734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67e9a81216fbaf59fe83913ed393b1dce60b8b7e490022b28459a93ee981f98a

Aliases

arxiv: 0911.3216 · arxiv_version: 0911.3216v1 · doi: 10.48550/arxiv.0911.3216 · pith_short_12: M7U2QEQW7OXV · pith_short_16: M7U2QEQW7OXVT7UD · pith_short_8: M7U2QEQW

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/M7U2QEQW7OXVT7UDSE7NHE5R3T \
  | 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: 67e9a81216fbaf59fe83913ed393b1dce60b8b7e490022b28459a93ee981f98a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aff30a638655b44d6365b9937e8558e6a43decf69222304db9a26469326b5f18",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-17T06:35:04Z",
    "title_canon_sha256": "fd0e142aefc51f8ad75fbc6160e335229a27f0db2f8a1c2ee32c292de94e94cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3216",
    "kind": "arxiv",
    "version": 1
  }
}