Pith Number

pith:KZ5ECILE

pith:2018:KZ5ECILEGUKVG7UB4VK5BG2KOD

not attested not anchored not stored refs pending

Sulfidic Anion Concentrations on Early Earth for Surficial Origins-of-Life Chemistry

Dimitar D. Sasselov, John D. Sutherland, Sukrit Ranjan, Zoe R. Todd

arxiv:1801.07725 v1 · 2018-01-23 · 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{KZ5ECILEGUKVG7UB4VK5BG2KOD}

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	2026-05-18T00:07:00.733300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

567a4121643515537e81e555d09b4a70c1cf4c9dd841c3af0fd2cb0945b8ff19

Aliases

arxiv: 1801.07725 · arxiv_version: 1801.07725v1 · doi: 10.48550/arxiv.1801.07725 · pith_short_12: KZ5ECILEGUKV · pith_short_16: KZ5ECILEGUKVG7UB · pith_short_8: KZ5ECILE

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/KZ5ECILEGUKVG7UB4VK5BG2KOD \
  | 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: 567a4121643515537e81e555d09b4a70c1cf4c9dd841c3af0fd2cb0945b8ff19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "378205e3c6b9bdcfc0293c647bc6b93b11531a2cc628a99a6f8dabdac23dc4a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-01-23T19:00:09Z",
    "title_canon_sha256": "cdaf45e2aaa8bdbe2e7c286382e07686917393d1d52cd419cd9efedf6fc64817"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07725",
    "kind": "arxiv",
    "version": 1
  }
}