Pith Number

pith:ITTCQ2LM

pith:2018:ITTCQ2LMPDZQ6SGLUOD65MEOU7

not attested not anchored not stored refs pending

The stellar populations of the central region of M31

M. Blana, M.H. Fabricius, M. Opitsch, O. Gerhard, R. Bender, R.P. Saglia

arxiv:1807.09284 v2 · 2018-07-24 · 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{ITTCQ2LMPDZQ6SGLUOD65MEOU7}

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	2026-05-18T00:01:58.512368Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44e628696c78f30f48cba387eeb08ea7c1cccbe1b10a05a1fff8276c0c8d6398

Aliases

arxiv: 1807.09284 · arxiv_version: 1807.09284v2 · doi: 10.48550/arxiv.1807.09284 · pith_short_12: ITTCQ2LMPDZQ · pith_short_16: ITTCQ2LMPDZQ6SGL · pith_short_8: ITTCQ2LM

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/ITTCQ2LMPDZQ6SGLUOD65MEOU7 \
  | 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: 44e628696c78f30f48cba387eeb08ea7c1cccbe1b10a05a1fff8276c0c8d6398

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e59df6724b780fbce0ac423bf7316a4b545095f2f084f3c11a6cd3495d211fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-24T18:00:17Z",
    "title_canon_sha256": "04e820e026ee0413050f5fac1d42cb0bd24cd8da45f91f5155484fd7f9e8a81d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.09284",
    "kind": "arxiv",
    "version": 2
  }
}