Pith Number

pith:Q5YCTGZN

pith:2008:Q5YCTGZN3HOSHT6S6RV62WL2JQ

not attested not anchored not stored refs pending

Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304

et al., H.E.S.S. Collaboration: F. Aharonian

arxiv:0810.3475 v1 · 2008-10-20 · 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{Q5YCTGZN3HOSHT6S6RV62WL2JQ}

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.

Cited by

1 paper in Pith

Cygnus X-3: A variable petaelectronvolt gamma-ray source

Receipt and verification

First computed	2026-05-18T03:48:03.154418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8770299b2dd9dd23cfd2f46bed597a4c17ccb4f5f0dff23652825af9b2cc88b0

Aliases

arxiv: 0810.3475 · arxiv_version: 0810.3475v1 · doi: 10.48550/arxiv.0810.3475 · pith_short_12: Q5YCTGZN3HOS · pith_short_16: Q5YCTGZN3HOSHT6S · pith_short_8: Q5YCTGZN

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/Q5YCTGZN3HOSHT6S6RV62WL2JQ \
  | 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: 8770299b2dd9dd23cfd2f46bed597a4c17ccb4f5f0dff23652825af9b2cc88b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8745baa352f8e3e1f6d89588cde24303f18e44924d70bb3a56444d7627248eac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-20T07:05:42Z",
    "title_canon_sha256": "7c5cd4fbc02a5f122bf234f0cca05d7185d76d3eb47c7ca53eac8409a8ec1223"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3475",
    "kind": "arxiv",
    "version": 1
  }
}