The City Chamber Orchestra of Hong Kong (CCOHK) was founded in Hong Kong in 1999 and is one of Asia’s leading chamber orchestras. Members are professional musicians experienced in playing a diverse ra
{"copyright_id":"0xdf6fd22d0adf43b547cddf4469341b06cb8bfb33dfe5f2c4db04d7b150e1df9c","name":"City Chamber Orchestra of Hong Kong","registered_at":"2026-06-21T06:31:36Z","symbol":"NIM1849028","token_address":"0xb132f2ebc5f9a88470cdf73e23084ae884fef711","type":"artist","uuid":"df9da613-dabe-4e10-bc73-09463e5ca57f"}
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 0xdf6fd22d0adf43b547cddf4469341b06cb8bfb33dfe5f2c4db04d7b150e1df9c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df9da613-dabe-4e10-bc73-09463e5ca57f.json and https://artists.proofprofile.net/proofs/artist/df9da613-dabe-4e10-bc73-09463e5ca57f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto Incantanto: I. Sortilegio (Sorcery)
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 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 0x90cf6a126185d42aea12c831bb32cbedf32f2605a0067876a76cc6c183cb412d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKHJ61200201.
Concerto Incantanto: V. Incantesimi (The Spells)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e2b25190d7243075252f971eb236803c8c849a8fe2ac22a1b1daa23851234c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DKHJ61200205.