Pith Number

pith:KLM2NR5Q

pith:2013:KLM2NR5Q4DCOR2TJ6IJMU4MTGO

not attested not anchored not stored refs pending

The Polonnaruwa meteorite: oxygen isotope, crystalline and biological composition

Andrew Oldroyd, Anil Samaranayake, Carl H. Gibson, Daryl H. Wallis, Jamie Wallis, K. Wickramarathne, M.K. Wallis, N. C. Wickramasinghe, Nori Miyake, Richard B. Hoover

arxiv:1303.1845 v1 · 2013-03-06 · q-bio.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KLM2NR5Q4DCOR2TJ6IJMU4MTGO}

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	2026-05-18T03:31:32.166791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52d9a6c7b0e0c4e8ea69f212ca71933397c89c6caebd380040a8ba7be71e7187

Aliases

arxiv: 1303.1845 · arxiv_version: 1303.1845v1 · doi: 10.48550/arxiv.1303.1845 · pith_short_12: KLM2NR5Q4DCO · pith_short_16: KLM2NR5Q4DCOR2TJ · pith_short_8: KLM2NR5Q

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/KLM2NR5Q4DCOR2TJ6IJMU4MTGO \
  | 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: 52d9a6c7b0e0c4e8ea69f212ca71933397c89c6caebd380040a8ba7be71e7187

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7eeb535c5fa7b921f5e814fcfc0b87bf1809c85603f1871e756c410ed811091c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.OT",
    "submitted_at": "2013-03-06T20:40:23Z",
    "title_canon_sha256": "91207a22a57b3272d64945c592694ca3e8c9f63746d4abd4d00e88732d822865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1845",
    "kind": "arxiv",
    "version": 1
  }
}