El Reino Infantil (The Children's Kingdom), is an Argentine channel featuring music for children owned by Leader Music. It was founded by Roberto Pumar in 2011. As of 30 June, 2025, the channel has 6
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3ce63091f0c54083e3a9da77d557f460d3e51618e080d87af71d570d8183a4. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c1a90dc-e3e4-4ba9-b780-29bc951f259e.json and https://artists.proofprofile.net/proofs/artist/4c1a90dc-e3e4-4ba9-b780-29bc951f259e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).