Pith Number

pith:WFAMYX77

pith:2015:WFAMYX77YJEAIFUQ6OAUHXS32V

not attested not anchored not stored refs pending

Water Formation During the Epoch of First Metal Enrichment

Abraham Loeb, Amiel Sternberg, Shmuel Bialy

arxiv:1503.03475 v2 · 2015-03-11 · astro-ph.GA · astro-ph.CO · 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{WFAMYX77YJEAIFUQ6OAUHXS32V}

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	2026-05-18T02:03:54.745855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b140cc5fffc248041690f38143de5bd563386594d4464f00f95bbec878e5b7c6

Aliases

arxiv: 1503.03475 · arxiv_version: 1503.03475v2 · doi: 10.48550/arxiv.1503.03475 · pith_short_12: WFAMYX77YJEA · pith_short_16: WFAMYX77YJEAIFUQ · pith_short_8: WFAMYX77

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/WFAMYX77YJEAIFUQ6OAUHXS32V \
  | 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: b140cc5fffc248041690f38143de5bd563386594d4464f00f95bbec878e5b7c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f709c790c59a97e95a35d171568f22fee916232d8f327105cc98a3451f92b24",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-03-11T20:00:00Z",
    "title_canon_sha256": "2c37e92853073d991515be5783447bf1d8fd8db53fea05292f67977b2ddbdd4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03475",
    "kind": "arxiv",
    "version": 2
  }
}