Pith Number

pith:2YDYY66O

pith:2013:2YDYY66O3K57HJEWWSUDLOFM3F

not attested not anchored not stored refs pending

Negative mass

Richard T Hammond

arxiv:1308.2683 v1 · 2013-08-06 · 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{2YDYY66O3K57HJEWWSUDLOFM3F}

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	2026-05-18T03:16:05.488836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6078c7bcedabbf3a496b4a835b8acd977b7a9ad3971059bdb507b33f1381298

Aliases

arxiv: 1308.2683 · arxiv_version: 1308.2683v1 · doi: 10.48550/arxiv.1308.2683 · pith_short_12: 2YDYY66O3K57 · pith_short_16: 2YDYY66O3K57HJEW · pith_short_8: 2YDYY66O

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/2YDYY66O3K57HJEWWSUDLOFM3F \
  | 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: d6078c7bcedabbf3a496b4a835b8acd977b7a9ad3971059bdb507b33f1381298

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b80c877575678a30ef086b78519a59bab93497405da09b54165d4c8b9721134c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-08-06T18:39:01Z",
    "title_canon_sha256": "40b4e04a184894ae78f699488a434ca8360fc666bcb5dc75777faac1e9f7354f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2683",
    "kind": "arxiv",
    "version": 1
  }
}