Pith Number

pith:6F7GTI7I

pith:2012:6F7GTI7IUTZCRRVFTZ7S6RQO3J

not attested not anchored not stored refs pending

The History of Star Formation in Galaxies

Daniela Calzetti (UMass), Marc Postman (STScI), Thomas M. Brown

arxiv:1209.4141 v1 · 2012-09-14 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6F7GTI7IUTZCRRVFTZ7S6RQO3J}

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.

Cited by

1 paper in Pith

Disentangling chemical evolution histories with phylogenetic trees

Receipt and verification

First computed	2026-05-18T03:45:21.526597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f17e69a3e8a4f228c6a59e7f2f460eda78037cbf28c2da36c798867c98b50ea9

Aliases

arxiv: 1209.4141 · arxiv_version: 1209.4141v1 · doi: 10.48550/arxiv.1209.4141 · pith_short_12: 6F7GTI7IUTZC · pith_short_16: 6F7GTI7IUTZCRRVF · pith_short_8: 6F7GTI7I

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/6F7GTI7IUTZCRRVFTZ7S6RQO3J \
  | 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: f17e69a3e8a4f228c6a59e7f2f460eda78037cbf28c2da36c798867c98b50ea9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed59902c2fcac37c88f988d7bc2059372ded6ec2940a9a1d71107d9000bedc93",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-14T13:30:42Z",
    "title_canon_sha256": "4222ee48e0907ee2f52939af6f34d4ae7e52f03b15c03341c17818e32cf3737d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4141",
    "kind": "arxiv",
    "version": 1
  }
}