Pith Number

pith:DTERCUJ5

pith:2015:DTERCUJ5AX27MFDJR4HLHTEOFE

not attested not anchored not stored refs pending

Red Supergiants as cosmic abundance probes: the first direct metallicity determination of NGC 4038 in the Antennae

B. Davies, B. Plez, C. J. Evans, C. Lardo, J. Z. Gazak, L. R. Patrick, M. Bergemann, R-P. Kudritzki

arxiv:1509.04937 v1 · 2015-09-16 · 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{DTERCUJ5AX27MFDJR4HLHTEOFE}

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	2026-05-18T01:28:46.015973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cc911513d05f5f614698f0eb3cc8e29078fe46a4c6d17dbb2cd51c061e9438d

Aliases

arxiv: 1509.04937 · arxiv_version: 1509.04937v1 · doi: 10.48550/arxiv.1509.04937 · pith_short_12: DTERCUJ5AX27 · pith_short_16: DTERCUJ5AX27MFDJ · pith_short_8: DTERCUJ5

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/DTERCUJ5AX27MFDJR4HLHTEOFE \
  | 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: 1cc911513d05f5f614698f0eb3cc8e29078fe46a4c6d17dbb2cd51c061e9438d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "800c9caee44c1ca88d47a8b791593383d56925e486e64f715e08e6f9533d9a52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-16T14:37:51Z",
    "title_canon_sha256": "392dfec39e251d0a75b13aa1b13657583dfa74a1830ddfd7a722464362bd165c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.04937",
    "kind": "arxiv",
    "version": 1
  }
}