Pith Number

pith:F2WBT4VP

pith:2011:F2WBT4VPH2EZGTLSJEMR6SFEQO

not attested not anchored not stored refs pending

Polarized Gamma-ray Emission from the Galactic Black Hole Cygnus X-1

J. Rodriguez, J. Wilms, K. Pottschmidt, M. Cadolle Bel, P. Laurent, V. Grinberg

arxiv:1104.4282 v1 · 2011-04-21 · 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{F2WBT4VPH2EZGTLSJEMR6SFEQO}

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	2026-05-18T02:02:16.690013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2eac19f2af3e89934d7249191f48a483a6421c7e187f2ee768784eb85b8bc8b9

Aliases

arxiv: 1104.4282 · arxiv_version: 1104.4282v1 · doi: 10.48550/arxiv.1104.4282 · pith_short_12: F2WBT4VPH2EZ · pith_short_16: F2WBT4VPH2EZGTLS · pith_short_8: F2WBT4VP

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/F2WBT4VPH2EZGTLSJEMR6SFEQO \
  | 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: 2eac19f2af3e89934d7249191f48a483a6421c7e187f2ee768784eb85b8bc8b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff41e35f1635ce57b19b7fcac18308afaaf24b936e04cafda36cb5623c8bf681",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-04-21T15:03:30Z",
    "title_canon_sha256": "7c6ea340def15b25b512eeca6302fbcd39ba767dc890c0ed080b6951792c7d69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4282",
    "kind": "arxiv",
    "version": 1
  }
}