Pith Number

pith:BGPZEFV5

pith:2013:BGPZEFV56E6DDFG54HZR2JHHSZ

not attested not anchored not stored refs pending

Surprises in the Hard X-ray Sky

Thierry J.-L. Courvoisier

arxiv:1310.0244 v1 · 2013-10-01 · 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{BGPZEFV56E6DDFG54HZR2JHHSZ}

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	2026-05-18T01:47:17.424435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

099f9216bdf13c3194dde1f31d24e7964e36a6045fe5f71eb2819c2fa923f0a4

Aliases

arxiv: 1310.0244 · arxiv_version: 1310.0244v1 · doi: 10.48550/arxiv.1310.0244 · pith_short_12: BGPZEFV56E6D · pith_short_16: BGPZEFV56E6DDFG5 · pith_short_8: BGPZEFV5

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/BGPZEFV56E6DDFG54HZR2JHHSZ \
  | 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: 099f9216bdf13c3194dde1f31d24e7964e36a6045fe5f71eb2819c2fa923f0a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c614d83b5e49986ef6517191358c88fefd6be5ebd5be15d6001cc86d9f71f58",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-10-01T11:18:58Z",
    "title_canon_sha256": "8c9bce932f04a2cfa03e63c96e7142f955698fe910f4e41e286f75e799012c49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0244",
    "kind": "arxiv",
    "version": 1
  }
}