Pith Number

pith:33GPZBPS

pith:2015:33GPZBPSWVP3DFA5I7BWGD3SFS

not attested not anchored not stored refs pending

HII Region Metallicity Constraints Near the Site of the Strongly Lensed Supernova "SN Refsdal" at Redshift 1.49

2), (2) University of Hertfordshire UK), C. Kobayashi (1, L. J. Kewley (1) ((1) Australian National University, T.-T. Yuan (1)

arxiv:1503.08822 v1 · 2015-03-30 · astro-ph.GA · 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{33GPZBPSWVP3DFA5I7BWGD3SFS}

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	2026-05-18T01:40:49.485794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

deccfc85f2b55fb1941d47c3630f722cb01aba9163eed59d103062516eaf1668

Aliases

arxiv: 1503.08822 · arxiv_version: 1503.08822v1 · doi: 10.48550/arxiv.1503.08822 · pith_short_12: 33GPZBPSWVP3 · pith_short_16: 33GPZBPSWVP3DFA5 · pith_short_8: 33GPZBPS

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/33GPZBPSWVP3DFA5I7BWGD3SFS \
  | 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: deccfc85f2b55fb1941d47c3630f722cb01aba9163eed59d103062516eaf1668

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b4c6eaf342a41708c48e6f904d9a5771a0377f6816b542a9f6289795751b916",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-03-30T20:00:22Z",
    "title_canon_sha256": "4370180782eefc6f028b4f6fb0822432fe54b0e867879b1c60f55148ec99709a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08822",
    "kind": "arxiv",
    "version": 1
  }
}