thumb|The China Philharmonic Orchestra performing at the Beijing Concert Hall|250px|right The China Philharmonic Orchestra (; abbreviated CPO) is an orchestra founded in Beijing, China, on May 25, 20
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 0x2bee6b8a508be6595dc7d60849f8b2980a6ded95d51eec306d8d124b88e9e571. 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/5cae3eef-a65f-4b83-8537-e750f0bb993e.json and https://artists.proofprofile.net/proofs/artist/5cae3eef-a65f-4b83-8537-e750f0bb993e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Qin Empire (Recording of theme music from the televison series "The Qin Empire")
2013 China Philharmonic Orchestra Symphony Concert (2)
2013 China Philharmonic Orchestra Symphony Concert (3)
2014 China Philharmonic Orchestra-Symphony Concert(20)
2013 China Philharmonic Orchestra Symphony Concert (1)
2014 China Philharmonic Orchestra - Symphony Concert (8)
Hero - Music from the Original Soundtrack
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 0x7440b90dc2e5d0f983278c491efac60c4cb38eba795ae411dbe876f45e378c05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM10212802.
Martial Arts Trilogy: Crouching Tiger, Hidden Dragon, The Banquet & Hero (Music from the Soundtracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b995aae95975da5f978bd3906b345684fdef8ce636d9bb9c9374ae87a227b6e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USSM10212801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7440b90dc2e5d0f983278c491efac60c4cb38eba795ae411dbe876f45e378c05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10212802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6cb274c621f07af931b4a689c08ba37d7510384bbd9f5ec6f012211f57063. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM10212812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bcefcdadeb02e434c5842e7f67773ab5a127e6a1eca35830e98ff23c14c7b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM10212811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c84683a0f6750b1ca593998fe4822b154b909e4de4f27a8f733fcc5d51656. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSKB1519001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6fe33e145c343147a619c57b18ba656941f5f8755ea21fe9313dcb4d5a33ef. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USSKB1519002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eeb5882b81b1bf8a26d0ed878fcb7ed0c8833cbed1fb5b713e8215221f3888. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSKB1519003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d9700eb3b823dd955d6c0524e01777aa742fadd23b4a6d8ad697bdffee1405. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USQX91101699.
Requiem and Redemption (Commander Li and the Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2169014d604576bb9e50d5d12cb7e3ded5ebc7451ae0ed86aae8ea108cf7cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USQX91101700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00321a21741aa33883032a8f2f1b0d74f697b212cd3eb98f021fc0dab155e22e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USQX91101702.
Heavenly Voice I (John and the Children's dialogue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654ab41ad8ce9f915ed98c290acc145f68a01e3f8699cb71e7731c644c328990. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USQX91101706.
The Touch (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0470884e74f3f0255b2c89fd1efdbd549b2594dce2c0b812cc7557372deefea7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USY251520984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef762797c261096da61736595e89360604e1fe9df00cb60476ebde0cbe1e759e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USY251520989.