Pith Number

pith:EHDTIPMJ

pith:2012:EHDTIPMJQIJWU2RROTOIRZ6HLQ

not attested not anchored not stored refs pending

Hubble Space Telescope H-alpha imaging of star-forming galaxies at z = 1-1.5: evolution in the size and luminosity of giant HII regions

(2) - Caltech, 3), (3) - CRAL Observatoire de Lyon, (4) - NASA Goddard Space Flight Center, (5) - IfA, (6) - Leiden Observatory), A. M. Swinbank (1), Durham University, H. Ebeling (5), Ian Smail (1), J. Richard (1, J. R. Rigby (4), R. A. Crain (6) ((1) - ICC, R. C. Livermore (1), R. G. Bower (1), R. S. Ellis (2), T. Jones (2), University of Hawaii

arxiv:1209.5741 v1 · 2012-09-25 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EHDTIPMJQIJWU2RROTOIRZ6HLQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:54:18.876871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21c7343d8982136a6a3174dc88e7c75c26fab7242ac25300d19aa2f272e25c07

Aliases

arxiv: 1209.5741 · arxiv_version: 1209.5741v1 · doi: 10.48550/arxiv.1209.5741 · pith_short_12: EHDTIPMJQIJW · pith_short_16: EHDTIPMJQIJWU2RR · pith_short_8: EHDTIPMJ

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/EHDTIPMJQIJWU2RROTOIRZ6HLQ \
  | 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: 21c7343d8982136a6a3174dc88e7c75c26fab7242ac25300d19aa2f272e25c07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "913af41bfcddd1d77371a9008e1f57121d548daafe1649dac397b506d10d6605",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-25T20:00:00Z",
    "title_canon_sha256": "bb9782fd012804dc1fda87a0b4c6d192bfb358d8646e8ae6c1f7a9eb5a6b582b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5741",
    "kind": "arxiv",
    "version": 1
  }
}