Pith Number

pith:XHH26O2X

pith:2012:XHH26O2XFE6OEX4JRFKBGGEHVI

not attested not anchored not stored refs pending

First Stars IV: Summary Talk

Andrea Ferrara

arxiv:1207.6553 v1 · 2012-07-27 · astro-ph.CO · physics.comp-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{XHH26O2XFE6OEX4JRFKBGGEHVI}

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	2026-05-18T01:56:06.644910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9cfaf3b57293ce25f898954131887aa06812b3ec596d6ff1288cc0f093c171d

Aliases

arxiv: 1207.6553 · arxiv_version: 1207.6553v1 · doi: 10.48550/arxiv.1207.6553 · pith_short_12: XHH26O2XFE6O · pith_short_16: XHH26O2XFE6OEX4J · pith_short_8: XHH26O2X

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/XHH26O2XFE6OEX4JRFKBGGEHVI \
  | 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: b9cfaf3b57293ce25f898954131887aa06812b3ec596d6ff1288cc0f093c171d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8b15d278d096460b2a519686a1ddf689ae428a61c9270d81d9bf466c6a48d66",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-27T14:25:58Z",
    "title_canon_sha256": "ce9053bb7f73bc516ecdb64d8aa1dd04e04411d84afa88e534e4fc7446d66d5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6553",
    "kind": "arxiv",
    "version": 1
  }
}