Pith Number

pith:7HIEWHDS

pith:2013:7HIEWHDSDIJDCKLR4DAOKZMXSV

not attested not anchored not stored refs pending

Characterization of a Thick Ozone Layer in Mars' Past

Justin Deighan, Robert E Johnson

arxiv:1303.3826 v1 · 2013-03-15 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7HIEWHDSDIJDCKLR4DAOKZMXSV}

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	2026-05-18T03:30:42.977967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9d04b1c721a12312971e0c0e56597954eb9128bed0c61aaca23f623659eaa1c

Aliases

arxiv: 1303.3826 · arxiv_version: 1303.3826v1 · doi: 10.48550/arxiv.1303.3826 · pith_short_12: 7HIEWHDSDIJD · pith_short_16: 7HIEWHDSDIJDCKLR · pith_short_8: 7HIEWHDS

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/7HIEWHDSDIJDCKLR4DAOKZMXSV \
  | 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: f9d04b1c721a12312971e0c0e56597954eb9128bed0c61aaca23f623659eaa1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b09d07cd7d0f2af9622eace0d5d51cbcdd2d5db3d5e7151302ee3eff3e89999b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-03-15T16:46:30Z",
    "title_canon_sha256": "826566f09e58a5f03769c9a98a160b37816de2113c893063dfd3935f52e4ae23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.3826",
    "kind": "arxiv",
    "version": 1
  }
}