Pith Number

pith:IOTXHIFE

pith:2017:IOTXHIFEXTKSHDEPRGOX4ISJIQ

not attested not anchored not stored refs pending

Opacity limit for supermassive protostars

Federico Marinacci, Fernando Becerra, Kohei Inayoshi, Lars E. Hernquist, Volker Bromm

arxiv:1702.03941 v2 · 2017-02-13 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IOTXHIFEXTKSHDEPRGOX4ISJIQ}

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	2026-05-18T00:17:27.272769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43a773a0a4bcd5238c8f899d7e2249442d57d336e335a70daf492e271819cbfe

Aliases

arxiv: 1702.03941 · arxiv_version: 1702.03941v2 · doi: 10.48550/arxiv.1702.03941 · pith_short_12: IOTXHIFEXTKS · pith_short_16: IOTXHIFEXTKSHDEP · pith_short_8: IOTXHIFE

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/IOTXHIFEXTKSHDEPRGOX4ISJIQ \
  | 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: 43a773a0a4bcd5238c8f899d7e2249442d57d336e335a70daf492e271819cbfe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e4c8b6978c22f4c4218e8eeea4f34f0fe2e8a819387f58c4403cdff90e21f9b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-02-13T19:00:14Z",
    "title_canon_sha256": "84c24c80c3b9c22fa9d97d9e9b9ecb7f532ba31bd0d9befa0ede6d2e341aa4ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.03941",
    "kind": "arxiv",
    "version": 2
  }
}