thumb|upright=1.35|An artist's impression of ice age Earth at Pleistocene glacial maximum An ice age is a term describing periods of time when the reduction in the temperature of Earth's surface and
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 0xfd530ec0406ab562cf5b27f7f18399a5f58d591f849d58f5efe7c0522e7170ba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b773ce2-1bd6-4886-85a0-8b3328d2a8da.json and https://artists.proofprofile.net/proofs/artist/3b773ce2-1bd6-4886-85a0-8b3328d2a8da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ice Age (Das Original-Hörspiel zum Kinofilm)
Ice Age 2 - Jetzt Taut's (Das Original-Hörspiel zum Kinofilm)
Ice Age 3 - Die Dinosaurier sind los (Das Original Hörspiel zum Kinofilm)
Ice Age 3 - Die Dinosaurier sind los (Das Original-Hörspiel zum Kinofilm)
Ice Age - Eine coole Bescherung (Das Original-Hörspiel zum Film-Special)
Ice Age 4 - Voll verschoben (Das Original-Hörspiel zum KInofilm)
Ice Age 4 - Voll verschoben! (Das Original-Hörspiel zum Kinofilm)
Ice Age 5 - Kollision voraus (Das Original-Hörspiel zum Kinofilm)
Ice Age 5 - Kollision voraus! (Das Original-Hörspiel zum Kinofilm)
Ice Age - Jäger der verlorenen Eier (Das Original-Hörspiel zum Film-Special)
Die Abenteuer von Buck Wild (Das Original-Hörspiel zum Disney Kinofilm)
Ice Age - Die Abenteuer von Buck Wild (Das Original-Hörspiel zum Kinofilm)