Pith Number

pith:47P4PDW2

pith:2009:47P4PDW2GFEYFHGT4YC7PH76Q5

not attested not anchored not stored refs pending

TeV Gamma Ray Astronomy

Wei Cui

arxiv:0907.4052 v1 · 2009-07-23 · 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{47P4PDW2GFEYFHGT4YC7PH76Q5}

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	2026-05-18T02:12:54.315510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7dfc78eda3149829cd3e605f79ffe874f7334eb2c65f3354043c3131b30cf61

Aliases

arxiv: 0907.4052 · arxiv_version: 0907.4052v1 · doi: 10.48550/arxiv.0907.4052 · pith_short_12: 47P4PDW2GFEY · pith_short_16: 47P4PDW2GFEYFHGT · pith_short_8: 47P4PDW2

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/47P4PDW2GFEYFHGT4YC7PH76Q5 \
  | 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: e7dfc78eda3149829cd3e605f79ffe874f7334eb2c65f3354043c3131b30cf61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "605582e034ade2bf81ec91dff134848c3bef1995db411b81abc10a44a275d4a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-07-23T13:00:19Z",
    "title_canon_sha256": "65123b890c93ca860914ec4d454146f5431ee19377fb4cc4c5fcd913a381d12b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4052",
    "kind": "arxiv",
    "version": 1
  }
}