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 0xf03f926407cfcd258001b45b5b385234f4aae96dac35334d15cbfc81926455c4. 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/d50490b6-549a-4cf7-b934-8d4f8173c3e9.json and https://artists.proofprofile.net/proofs/artist/d50490b6-549a-4cf7-b934-8d4f8173c3e9.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 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 0x7f65ced51052f512af316787661c154ab67d679369fad074f32c8d3bc48df1e7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZN882282932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1339642fc863f42a8dd8623f77c656454d7d8d216c5c116145e4dfd9ee49892. 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/SGUM72201318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b136a698cab5076e2418165481fef62ad2c9c4a72f87b2d6102c5e30949bb6e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SGUM72301731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5600888f0e3c2a78fa096441cac6288729f7f7aac64805fb450a49d1b3b3ca8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SGUM72400924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15c26d5410d60bdb856c544497b3fdcdfe53604c7e64cb1ec0e5749b7edbd33. 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/SGUM72401320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c0cdcb25ac6aa3bf2b7a66831d178f289226deb3481081cd79f86ea1bbd833. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SGUM72400934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bc6099c63dee2a483b9d95e7099aa9c26d404d8621392bd292493f28d5c994. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/SGUM72400933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5600888f0e3c2a78fa096441cac6288729f7f7aac64805fb450a49d1b3b3ca8. 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/SGUM72400924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2177a594d813dbbfd2d3b94c22accaa3d5d8b18d81753e033e4891f36f4b0bb. 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/SGUM72500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94db3b1af18f9520e47a5fbc06fbb9b0a2bcba9452ae4a2cc723fc23f452c1e5. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/SGUM72400935.
Định Mệnh Tình Yêu / Lỡ Say Bye Là Bye - Version Táo Liên Quân 2025
Định Mệnh Tình Yêu / Lỡ Say Bye Là Bye (Version Táo Liên Quân 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa183d15078de51636252eb52dcca55fb557538ee5e86083fc95acad12dde9d4. 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/US7VG2581677.
Lane Nào Bá Nhất - Version Táo Liên Quân 2025
Lane Nào Bá Nhất (Version Táo Liên Quân 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf76b85f3ce680526f0263e2a7595a6ea68fce9aaf139b2b9b33676747f7422. 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/US7VG2581676.
Tết Đong Đầy (Tết Liên Quân 2025) - Full Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893deb4945c3b70a0a5deaa0e84f088e38961df5603a964872bde1b45710382. 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/US7VG2537434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de7af4bc172e00d1e9ab3b3438f58492fe440540fde87255d3f654bc5295174. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR10S2439796.