Pith Number

pith:BX4V7LCM

pith:2016:BX4V7LCMB3OI7ZHRFSAXA6UDQ2

not attested not anchored not stored refs pending

Constraints on the Early Terrestrial Surface UV Environment Relevant to Prebiotic Chemistry

Dimitar D. Sasselov, Sukrit Ranjan

arxiv:1610.06223 v1 · 2016-10-19 · 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{BX4V7LCMB3OI7ZHRFSAXA6UDQ2}

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	2026-05-18T00:47:49.648133Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0df95fac4c0edc8fe4f12c81707a8386ab50778ea9673437068501df887ef36c

Aliases

arxiv: 1610.06223 · arxiv_version: 1610.06223v1 · doi: 10.48550/arxiv.1610.06223 · pith_short_12: BX4V7LCMB3OI · pith_short_16: BX4V7LCMB3OI7ZHR · pith_short_8: BX4V7LCM

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/BX4V7LCMB3OI7ZHRFSAXA6UDQ2 \
  | 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: 0df95fac4c0edc8fe4f12c81707a8386ab50778ea9673437068501df887ef36c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ac4893f61dd4531975ca7b48492a11ce23df2c89fac027c276c2ac0e06d8760",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-10-19T21:22:29Z",
    "title_canon_sha256": "0716c67054102647f7d40b7a2ad4012a627a54abb8e7eee252212952bbcd56ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.06223",
    "kind": "arxiv",
    "version": 1
  }
}