Pith Number

pith:37PNAUNV

pith:2015:37PNAUNVG7PZ37SCJANABDNGZS

not attested not anchored not stored refs pending

The Spatially-Resolved Star Formation History of the M31 Outer Disc

Alan W. McConnachie, Annette M. N. Ferguson, Edouard J. Bernard, Geraint F. Lewis, Mike J. Irwin, Rodrigo A. Ibata, Scott C. Chapman

arxiv:1508.01559 v1 · 2015-08-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37PNAUNVG7PZ37SCJANABDNGZS}

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	2026-05-18T01:32:59.379565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfded051b537df9dfe42481a008da6cca1f9ad005e366a03145c308e3e39761b

Aliases

arxiv: 1508.01559 · arxiv_version: 1508.01559v1 · doi: 10.48550/arxiv.1508.01559 · pith_short_12: 37PNAUNVG7PZ · pith_short_16: 37PNAUNVG7PZ37SC · pith_short_8: 37PNAUNV

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/37PNAUNVG7PZ37SCJANABDNGZS \
  | 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: dfded051b537df9dfe42481a008da6cca1f9ad005e366a03145c308e3e39761b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea9c11799167042a986871849eb395fb1165aec78413f8f42dd24eed759af44f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-06T22:49:50Z",
    "title_canon_sha256": "623b05f9ea7445701a4712e47942d972f319671572fd2ee178171e2eb30b5b98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01559",
    "kind": "arxiv",
    "version": 1
  }
}