The University of the Philippines Singing Ambassadors
{"copyright_id":"0xdfb2dfc8a3fdb4c55f5544d01ff87018357e4c3d7f0aec29989246cbd1b55e8d","name":"The University of the Philippines Singing Ambassadors","registered_at":"2026-06-16T14:57:56Z","symbol":"NIM1087726","token_address":"0xae07b9dd7fcde5c1fc5936a294f7882561d90882","type":"artist","uuid":"47f03d91-42eb-4f74-8379-9133ca65043b"}
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 0xdfb2dfc8a3fdb4c55f5544d01ff87018357e4c3d7f0aec29989246cbd1b55e8d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47f03d91-42eb-4f74-8379-9133ca65043b.json and https://artists.proofprofile.net/proofs/artist/47f03d91-42eb-4f74-8379-9133ca65043b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62875dfbc43a41c195a06c52e503cdd1a911abedf996c14dee054bf82ce263de. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACT1653255.
The University of the Philippines Singing Ambassadors Live at Luxembourg