Pith Number

pith:BQWVHCDS

pith:2014:BQWVHCDSUEPD6A5OSUPDHLOXKB

not attested not anchored not stored refs pending

Approximating light rays in the Schwarzschild field

Oldrich Semerak

arxiv:1412.5650 v2 · 2014-12-17 · astro-ph.HE · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BQWVHCDSUEPD6A5OSUPDHLOXKB}

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	2026-05-18T02:27:18.154577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c2d538872a11e3f03ae951e33add75068b4c7053f536ddb1f0338646e1ac8e7

Aliases

arxiv: 1412.5650 · arxiv_version: 1412.5650v2 · doi: 10.48550/arxiv.1412.5650 · pith_short_12: BQWVHCDSUEPD · pith_short_16: BQWVHCDSUEPD6A5O · pith_short_8: BQWVHCDS

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/BQWVHCDSUEPD6A5OSUPDHLOXKB \
  | 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: 0c2d538872a11e3f03ae951e33add75068b4c7053f536ddb1f0338646e1ac8e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3089e946e81d5ccdf3ca653a4f2b75468b856789bf6c9308f2268ac411c4d4b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-12-17T22:17:02Z",
    "title_canon_sha256": "075d3551de508225bc8f4c56913a95519b1572c0ec2ab24486a0f6c05810b737"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.5650",
    "kind": "arxiv",
    "version": 2
  }
}