Pith Number

pith:BNGFCZ4F

pith:2018:BNGFCZ4F2CDO4UPIEMOUZOPDM3

not attested not anchored not stored refs pending

The when and where of water in the history of the universe

Karla de Souza Torres, Othon Cabo Winter

arxiv:1803.01452 v1 · 2018-03-05 · 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{BNGFCZ4F2CDO4UPIEMOUZOPDM3}

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	2026-05-18T00:21:50.528388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b4c516785d086ee51e8231d4cb9e366edf324291ef40c9959beab54e0869a2a

Aliases

arxiv: 1803.01452 · arxiv_version: 1803.01452v1 · doi: 10.48550/arxiv.1803.01452 · pith_short_12: BNGFCZ4F2CDO · pith_short_16: BNGFCZ4F2CDO4UPI · pith_short_8: BNGFCZ4F

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/BNGFCZ4F2CDO4UPIEMOUZOPDM3 \
  | 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: 0b4c516785d086ee51e8231d4cb9e366edf324291ef40c9959beab54e0869a2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "069dc3d80da5f12cbe06c807ee00436345887983356911492ee7f19a06dfbd2a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-03-05T01:27:35Z",
    "title_canon_sha256": "6f8779d3ee32fc76e4c127adc2e31a1a6e91cd2048c4f4456537600b40ab9624"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01452",
    "kind": "arxiv",
    "version": 1
  }
}