Pith Number

pith:NKTTIPXW

pith:2016:NKTTIPXWBKWDKB5AXXSKCWRCTB

not attested not anchored not stored refs pending

Characterizing stellar halo populations II: The age gradient in blue horizontal-branch stars

Angus Williams, James Binney, Payel Das

arxiv:1608.07297 v1 · 2016-08-25 · 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{NKTTIPXWBKWDKB5AXXSKCWRCTB}

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	2026-05-18T01:07:53.403379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aa7343ef60aac3507a0bde4a15a22984198d3e716c3139f5d1af884d5c5f8f9

Aliases

arxiv: 1608.07297 · arxiv_version: 1608.07297v1 · doi: 10.48550/arxiv.1608.07297 · pith_short_12: NKTTIPXWBKWD · pith_short_16: NKTTIPXWBKWDKB5A · pith_short_8: NKTTIPXW

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/NKTTIPXWBKWDKB5AXXSKCWRCTB \
  | 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: 6aa7343ef60aac3507a0bde4a15a22984198d3e716c3139f5d1af884d5c5f8f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f8cee2675d9143bbb776a51cf1b29de5889dfac179bae848ba5c699bd60564e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-08-25T20:00:20Z",
    "title_canon_sha256": "9c1a1733c72278ebecf14517f34d14a255e59085d08a3e1c336ead72905f0eb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.07297",
    "kind": "arxiv",
    "version": 1
  }
}