Pith Number

pith:3Y4QMCZP

pith:2012:3Y4QMCZPVGPXCXRAKOO2ZGUYAQ

not attested not anchored not stored refs pending

Uncertainties in the calibrations of star formation rate

Fenghui Zhang, Lifang Li, Xiaoyu Kang, Yulong Zhuang, Zhanwen Han

arxiv:1211.0265 v2 · 2012-11-01 · astro-ph.SR · astro-ph.CO

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

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	2026-05-18T01:53:26.912351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de39060b2fa99f715e20539dac9a980422319c22a36960224d5eebdfcd697e23

Aliases

arxiv: 1211.0265 · arxiv_version: 1211.0265v2 · doi: 10.48550/arxiv.1211.0265 · pith_short_12: 3Y4QMCZPVGPX · pith_short_16: 3Y4QMCZPVGPXCXRA · pith_short_8: 3Y4QMCZP

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/3Y4QMCZPVGPXCXRAKOO2ZGUYAQ \
  | 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: de39060b2fa99f715e20539dac9a980422319c22a36960224d5eebdfcd697e23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a167f8b16ffccb024e30e5f1ac51ba2c32e92921d94fe8e944e40472e0fee819",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-11-01T19:40:17Z",
    "title_canon_sha256": "fbc9c4ef02066094c763009b707a7ce92ea50f41eedd0409a4272a7a60af1ce6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.0265",
    "kind": "arxiv",
    "version": 2
  }
}