Pith Number

pith:B4XKTDOW

pith:2020:B4XKTDOWXH63WIU3C4S3W2XLPE

not attested not anchored not stored refs pending

Explaining the Variations in Isotopic Ratios in Meteoritic Amino Acids

Michael A. Famiano, Richard N. Boyd, Satoshi Chiba, Takashi Onaka, Toshi Suzuki, Toshitaka Kajino, Yirong Mo

arxiv:2005.05540 v1 · 2020-05-12 · astro-ph.EP · physics.bio-ph · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B4XKTDOWXH63WIU3C4S3W2XLPE}

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	2026-07-05T01:30:03.333075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f2ea98dd6b9fdbb229b1725bb6aeb790523cdd73976d5cb64d6307cc19e15b9

Aliases

arxiv: 2005.05540 · arxiv_version: 2005.05540v1 · doi: 10.48550/arxiv.2005.05540 · pith_short_12: B4XKTDOWXH63 · pith_short_16: B4XKTDOWXH63WIU3 · pith_short_8: B4XKTDOW

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/B4XKTDOWXH63WIU3C4S3W2XLPE \
  | 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: 0f2ea98dd6b9fdbb229b1725bb6aeb790523cdd73976d5cb64d6307cc19e15b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8817b67941a6710bbffe6d7860963b467f418b2f2735fe0b3235dccac073c06f",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2020-05-12T04:11:54Z",
    "title_canon_sha256": "e41bb828cd5d27d6cb6395dc0da07effe703b0b4d78d6cf17d67f3ed4c662431"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.05540",
    "kind": "arxiv",
    "version": 1
  }
}