Pith Number

pith:7FKD6MB7

pith:2018:7FKD6MB77NKGTZA6IKYVPB4HES

not attested not anchored not stored refs pending

Constraining the Time Interval for the Origin of Life on Earth

Andrew S. Tupper, Ben K. D. Pearce, Paul G. Higgs, Ralph E. Pudritz

arxiv:1808.09460 v1 · 2018-08-28 · astro-ph.EP · physics.ao-ph · physics.geo-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{7FKD6MB77NKGTZA6IKYVPB4HES}

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	2026-05-18T00:06:55.538383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9543f303ffb5469e41e42b157878724991d9b90f0e9afa6b3d5ffed40403977

Aliases

arxiv: 1808.09460 · arxiv_version: 1808.09460v1 · doi: 10.48550/arxiv.1808.09460 · pith_short_12: 7FKD6MB77NKG · pith_short_16: 7FKD6MB77NKGTZA6 · pith_short_8: 7FKD6MB7

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/7FKD6MB77NKGTZA6IKYVPB4HES \
  | 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: f9543f303ffb5469e41e42b157878724991d9b90f0e9afa6b3d5ffed40403977

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56295f6b84170cc2c9d263f4444a73111c59cdf0512ceae2ad9bf3653ef82ec4",
    "cross_cats_sorted": [
      "physics.ao-ph",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-08-28T18:00:10Z",
    "title_canon_sha256": "112f5b51dca1d1204f5f502b0c84dca2b7c28bb7e2be8ab326206034bb3b0db5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09460",
    "kind": "arxiv",
    "version": 1
  }
}