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 0xcee129c7168fb58da790f41fc35a5f14ba5055dd3409d0ec5a6957fb29935896. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee1fa67b-f75d-4654-96ff-7d0dbd10a2f1.json and https://artists.proofprofile.net/proofs/artist/ee1fa67b-f75d-4654-96ff-7d0dbd10a2f1.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 0x75e8c5df889f6ac3e5e6a87852fde025494f4eb0fff41e1551d0a2139ed0f121. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM91020175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a1cf7d322eecc82838aceae5bef1b6f48ddc542d745cc363f88ba14af37046. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA72222195.
Tuyển Tập Những Bài Hát Hay Của Anh Khang
Tuyen Tap Nhung Bai Hat Hay Cua Anh Khang
Em Gai Mua Cover - Huong Tram ft Anh Khang (Original)
Chuyen Di Cua Nam - Di De Tro Ve 2 (Cover) [Original]
Mashup: Bài Thánh Ca Buồn - Hai Mùa Noel - Giáng Sinh Quốc Tế
Những Bài Hát Thập Niên 8x 9x Hay Nhất Của Anh Khang
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9e8d5890dcdcec15455c150747f79dd143692dc197e919fa653081a3e2acf1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA0F2020656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad6dc1b5b80821f8f170ef04f9f4e232fa331722f8bdea1565df2a9f5df61b0. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/VNA0F2020658.
Những Bài Hát Bất Hủ Thập Niên 8x 9x Của Anh Khang (Vol. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c55f6bd610a4c4fa2587c28fc99207b04c0e341f9969ab2229081faa3c1192d. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/VNA0F2103833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269438c1a7c3ef906977c7b17fd7b48fc43ef7a9598356f596e93bd05c523489. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/VNA0F2103834.
Những Bài Hát Bất Hủ Thập Niên 8x 9x Của Anh Khang (Vol. 1)
Những Bài Hát Bất Hủ Thập Niên 8x 9x Của Anh Khang (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe083711142190d1fdcea1ee33e7c0867a298f8760e19ace8af75e8dcf0f324c8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:00:37Z), 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/VNA0F2103823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42264eb6bf65646002453f730d0d91cc24008dc778ca2d225d7c5471b2f96d1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/VNA0F2103825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b07fc15da08363fdf443167e218275cf90ae9c61167a69f1142e3a96e93e84. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QM4TW2466514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b02e46d43d95e17b04c798a354f1ec782f575b7101a281c2b0fe99657c9a59a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMFME2403517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bef2fc0d6756e470b10ce6545aa9a6984c9c1dc52ee9ff1500cd1303df128c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22584240.