Pith Number

pith:FMOJI7IP

pith:2018:FMOJI7IPYVTIGUEZYMSSG6E2KK

not attested not anchored not stored refs pending

Where is Population II?

C. L. Reichardt, Duncan A. Forbes, F.Bianchini, J. Mould

arxiv:1802.01188 v1 · 2018-02-04 · 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{FMOJI7IPYVTIGUEZYMSSG6E2KK}

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	2026-05-18T00:18:52.109870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b1c947d0fc566835099c32523789a528707a25d4215cedf766a5e7c58c6debe

Aliases

arxiv: 1802.01188 · arxiv_version: 1802.01188v1 · doi: 10.48550/arxiv.1802.01188 · pith_short_12: FMOJI7IPYVTI · pith_short_16: FMOJI7IPYVTIGUEZ · pith_short_8: FMOJI7IP

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/FMOJI7IPYVTIGUEZYMSSG6E2KK \
  | 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: 2b1c947d0fc566835099c32523789a528707a25d4215cedf766a5e7c58c6debe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d3423a38c7e77b0b766da2093567071767b80b22b69f31cabad3ef37439c1d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-02-04T20:28:24Z",
    "title_canon_sha256": "76cea6f8570fa3c7d856163e94402b8cfa6752fae78a2cb3fa53847561452b19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01188",
    "kind": "arxiv",
    "version": 1
  }
}