Pith Number

pith:2OYRUZF6

pith:2013:2OYRUZF6QXZ2B6J4GTMAXLVQZT

not attested not anchored not stored refs pending

The Star Formation History of the very metal poor BCD IZw18 from HST/ACS data

A. Aloisi (STScI), F. Annibali (INAF-OABo), G. Clementini (INAF-OABo), G. Fiorentino (INAF-OABo), I. Musella (INAF-OAC), M. Cignoni (INAF-OABo, M. Marconi (INAF-Oac), M. Tosi (INAF-Oabo), R. Contreras Ramos (INAF-OABo), R. P. van der Marel (STScI), UniBo)

arxiv:1303.3909 v1 · 2013-03-15 · 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{2OYRUZF6QXZ2B6J4GTMAXLVQZT}

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	2026-05-18T01:51:06.591675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3b11a64be85f3a0f93c34d80baeb0ccc9c360ef46f4388120ddcce394150af3

Aliases

arxiv: 1303.3909 · arxiv_version: 1303.3909v1 · doi: 10.48550/arxiv.1303.3909 · pith_short_12: 2OYRUZF6QXZ2 · pith_short_16: 2OYRUZF6QXZ2B6J4 · pith_short_8: 2OYRUZF6

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/2OYRUZF6QXZ2B6J4GTMAXLVQZT \
  | 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: d3b11a64be85f3a0f93c34d80baeb0ccc9c360ef46f4388120ddcce394150af3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5268b37aa38fa7cf8f6005027c53d9b662e602681d98e2c46af7d61e49bc3854",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-15T21:19:58Z",
    "title_canon_sha256": "c681ec8a8ab247223960eeefb7855ca4faed3d80ace4e76fe90dc89d86aa99fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.3909",
    "kind": "arxiv",
    "version": 1
  }
}