1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77209af08bdbe214cab7c8c146ff1305eacccf01dfe7c43c7b497f602a8b7e11. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a736b429-22ca-486f-a8f4-8240e5045364.json and https://artists.proofprofile.net/proofs/artist/a736b429-22ca-486f-a8f4-8240e5045364.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keroncong Orchestra - Persembahan Bagi Bunga Bangsa
Keroncong Pilihan Dari Masa Ke Masa, Vol. 9