Pith Number

pith:OV33ZM5T

pith:2012:OV33ZM5TTYGON44DUOLZ5RIMBC

not attested not anchored not stored refs pending

Determining the Hubble constant using Giant extragalactic HII regions and HII galaxies

2), (2) Institute of Astronomy, 3), (3) Institute of Astronomy, (4) Institute for Astronomy, (5) Academy of Athens Research Center for Astronomy, 6), (6) High Energy Physics Group, (7) European Southern Observatory, Applied Mathematics, Astrophysics, Athens, Barcelona, Cambridge, Chile), Dept. ECM, Elena Terlevich (1), Fabio Bresolin (4), Greece, Hawaii, Honolulu, Jorge Melnick (7) ((1) Instituto Nacional de Astrofisica Optica y Electronica, Manolis Plionis (1, Mexico, National Observatory of Athens, Puebla, Ricardo Chavez (1), Roberto Terlevich (1, Santiago de Chile, Spain, Spyros Basilakos (5, Thessio, Tonantzintla, UK, Universitat de Barcelona, University of Hawaii, USA

arxiv:1203.6222 v2 · 2012-03-28 · 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{OV33ZM5TTYGON44DUOLZ5RIMBC}

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	2026-05-18T01:58:01.055160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7577bcb3b39e0ce6f383a3979ec50c089c00163f36d00724619986b710abd93c

Aliases

arxiv: 1203.6222 · arxiv_version: 1203.6222v2 · doi: 10.48550/arxiv.1203.6222 · pith_short_12: OV33ZM5TTYGO · pith_short_16: OV33ZM5TTYGON44D · pith_short_8: OV33ZM5T

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/OV33ZM5TTYGON44DUOLZ5RIMBC \
  | 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: 7577bcb3b39e0ce6f383a3979ec50c089c00163f36d00724619986b710abd93c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96a8c5286ae3c3a0ddea517d69c470ba18f2950074d8e5ae4ec6d411a8756fad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-28T10:36:09Z",
    "title_canon_sha256": "4e4d3c2c0cdd9afa0bb897965c7e9279a659ec65f3efda93a9bd0e9ac550ba46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6222",
    "kind": "arxiv",
    "version": 2
  }
}