Pith Number

pith:W7POMLZ2

pith:2013:W7POMLZ2KHL5NVCXEZXTGGUN57

not attested not anchored not stored refs pending

Gravitational blueshift from a collapsing object

Cosimo Bambi, Daniele Malafarina, Lingyao Kong

arxiv:1310.1320 v2 · 2013-10-04 · gr-qc · 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{W7POMLZ2KHL5NVCXEZXTGGUN57}

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	2026-05-18T02:30:40.548485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7dee62f3a51d7d6d457266f331a8defea47acd9573ddc226b6732ea054a7773

Aliases

arxiv: 1310.1320 · arxiv_version: 1310.1320v2 · doi: 10.48550/arxiv.1310.1320 · pith_short_12: W7POMLZ2KHL5 · pith_short_16: W7POMLZ2KHL5NVCX · pith_short_8: W7POMLZ2

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/W7POMLZ2KHL5NVCXEZXTGGUN57 \
  | 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: b7dee62f3a51d7d6d457266f331a8defea47acd9573ddc226b6732ea054a7773

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2d710781ced52c6c910a3c385d91e7cc8290e78cb1bd3c712b6a1f98327cb2d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-10-04T15:32:08Z",
    "title_canon_sha256": "45d4fb4a98b31d533a4b41fcf4ca67e3c9b7682a9296ab021f3c4cc617463351"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1320",
    "kind": "arxiv",
    "version": 2
  }
}