Pith Number

pith:FW2IZYNI

pith:2012:FW2IZYNIH3VRNABLFXLJABZAHA

not attested not anchored not stored refs pending

Comparing secondary structures of RNA and calculating the free energy of an interior loop using a novel method for calculating free energy

Asaf Farhi

arxiv:1212.4081 v1 · 2012-12-17 · q-bio.BM · cond-mat.stat-mech · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FW2IZYNIH3VRNABLFXLJABZAHA}

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	2026-05-18T03:38:21.560166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2db48ce1a83eeb16802b2dd6900720382519e3f51d43ee50c25f493638eabf92

Aliases

arxiv: 1212.4081 · arxiv_version: 1212.4081v1 · doi: 10.48550/arxiv.1212.4081 · pith_short_12: FW2IZYNIH3VR · pith_short_16: FW2IZYNIH3VRNABL · pith_short_8: FW2IZYNI

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/FW2IZYNIH3VRNABLFXLJABZAHA \
  | 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: 2db48ce1a83eeb16802b2dd6900720382519e3f51d43ee50c25f493638eabf92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6607162819723e6d8be80415e366ae3176ae9de5ade42fdd84f6c1f059c99f26",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.BM",
    "submitted_at": "2012-12-17T17:45:49Z",
    "title_canon_sha256": "01b18a50229c1e3b5ab9b60d61649f75cca245c4103b4f3000e7a6fa70106981"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4081",
    "kind": "arxiv",
    "version": 1
  }
}