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 0xddb60f2bb3107e9056dde4195b1061c520ab5cf6e1dac4bff8bc13271db38892. 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/5c5cd51b-d2a1-4dbb-85d2-977dbfa96d18.json and https://artists.proofprofile.net/proofs/artist/5c5cd51b-d2a1-4dbb-85d2-977dbfa96d18.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 0x3041d0e08189ec3062777515e6f657bec723eeac3e8af98df10cc70c8b9c6a22. 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/HKG732270965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b3c7e43e3c40bcb49cb21f37f8062d08b5fa199968a121f45c7188f3dcefed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732203429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107a69d68dcbd7a8043441d32efbf29cec49febae057370d0b47356df7a3df9d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732356524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682f16cdfa0a1d9b510972abd34780d6b717eb55ef8124b1a7cd02eb83f3358. 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/HKG732345447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee89ca8f37768fe371b67c6b964e88746f54a7d794e65e9b178bccc3ff6af5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732328955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35b585dfa4ea26d95fbbece2f8b28669719a2bda09ced0189fa3f73152300ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732269345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dfc939fa70c4bff70efb8db915925071ac7d7747d388d3e117d240fe8b2553. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732246778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dc089d90c1cace8a84a2bcfa778d3493bb544f016934b6441320fe7ff73dd7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732246787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbce206ad2d0f181c88e6994e27d681f118fe293244135280f9ab995900168f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732246784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba92cc676a0a272b5ab8fcc92edebf4a903ed5027dc0051a4a4bb366184928ff. 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/HKG732246783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3b287782ddb4f704b9923d90b866a106daffda7115d011659667b66318be1d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732246782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f142c5580ae465bda208aae15fd0809cf7c860223a58ea4ef30e92252e810ee. 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/HKG731721706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0194945d9c794b85391b7b68de2490d33aa3ab16bebef865813e11504a529a4. 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/HKG732246781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82455e48a8e3db3ff896432305b8c95652d8f6b33f44ef7261edaaf43b3e21c. 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/HKG731857984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37268d130c9aec00cd4c0b5fb6b2f36bbd5294e5fc3850a259a16249d19854c. 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/HKG732137616.
特别（澳门城市大学2021届毕业生原创歌曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d135abc5c4743205f3f31a326dbc254f064a7875ddbc727f92dcfbedb2b3b3f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG742115915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba37fdb74c07e0843b6d76a8b50d94eb35ce302cd3a9c21242d0681117ef219. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732102720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30154395e699a7b19a52ccdf9971e62831c6b79833bcca255ad1bee08001424a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732120420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733abefe99dcc31a97300ca4f11ad90c8896d39db48021da9f11fa8303d2114e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732126470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675ae5a4d043aba7df71494be1a38eee2c9d4f671e1c872d73d0d0f66b187a0. 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/QZXLZ2338464.