Pith Number

pith:CJ55EIAX

pith:2015:CJ55EIAXZGGCSFIUXXJLWTYDZS

not attested not anchored not stored refs pending

The gas metallicity gradient and the star formation activity of disc galaxies

Argentina), Chile), Emanuel Sillero (IATE, Jose M. Vilchez (IAA, Patricia B. Tissera (UNAB, Spain), Susana E. Pedrosa (IAFE

arxiv:1511.08227 v1 · 2015-11-25 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CJ55EIAXZGGCSFIUXXJLWTYDZS}

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	2026-05-18T01:21:51.537186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

127bd22017c98c291514bdd2bb4f03cca019591ed816c419d9e8f407e17bff87

Aliases

arxiv: 1511.08227 · arxiv_version: 1511.08227v1 · doi: 10.48550/arxiv.1511.08227 · pith_short_12: CJ55EIAXZGGC · pith_short_16: CJ55EIAXZGGCSFIU · pith_short_8: CJ55EIAX

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/CJ55EIAXZGGCSFIUXXJLWTYDZS \
  | 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: 127bd22017c98c291514bdd2bb4f03cca019591ed816c419d9e8f407e17bff87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c846d6c323fc01125e875f8c89e62c52593c8ac63382828af6c5c6569b521dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-25T21:13:57Z",
    "title_canon_sha256": "a8df5eb62be7781d5d3ad96823020b71222e3bf526fbdb08acdbc380f845bbaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.08227",
    "kind": "arxiv",
    "version": 1
  }
}