Anak Kolong () is a 2024 Indonesian Coming of age film directed by Sony Gaokasak, written by Sony Gaokasak, and Novi Pritania. Produced by Agustinus Sitorus under the banners of PIM Pictures. This nar
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e69ef6ea7f37ddf5eb8d6f02fa661a63ff0820ccc03f547d2d520802a715432. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c05c338-725b-42fe-a357-24a54d796e25.json and https://artists.proofprofile.net/proofs/artist/3c05c338-725b-42fe-a357-24a54d796e25.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.