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 0xed1d47ba24102838f184cb6254721feb90bef08b424f99ca1d6457d08acfe846. 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/413de9d5-5caf-43b0-9f29-c13a3c1a40b9.json and https://artists.proofprofile.net/proofs/artist/413de9d5-5caf-43b0-9f29-c13a3c1a40b9.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 0xd1f5ec9d77afb5ce5e6f589998398743c9e15616816f3a10fbc75e84d6c77137. 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/HKJ962012546.
苦盡甘來 (《北京女子圖鑑 助理女王》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263b5880d0348e295f0777fa1d113f8729aa3e5a9785024db5ff8218b606cf20. 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/TWA771901061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73cf8766b62b651399974bc03290db7ae8d4c4c5b09761e3879c858f64d0e7. 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/HKJ952008501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61083ffab28bc9110d744465faa42db8287e08498e2bd5a2535e988f8d7f9f65. 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/HKJ952008502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720103739329803cdcdf7a4100b362e81dcf555f0c8a86b959219583fcf4adbf. 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/HKJ952008503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94112cfe819fe569ff87a3eeb430f44388b7c0aabe5354481c4d56c2e015c3de. 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/HKJ952008504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2516cd5d2e5ca41cce7cc801475c730f5f913bc871f034a35c94d69b69f0897c. 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/HKJ952008505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f6bc65dff9daf25b52b39213d13bf21258bb18a848218a5b7eac8765ebb2d5. 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/HKJ952008506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0968c0da7f40d505663e890561bcfa82d46fc5c7321105afe0def8d467c8f4. 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/HKJ952008507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8412f757e01124d96a9f965295ff6f6d58069335074cfc3fd6016b4727e5b. 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/HKJ952008508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bac6a5eef6ecfab65456614ebe174b446fb775bb22532207beac2fe7365186. 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/HKJ952008509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce58d524f5f73dd799f572cf05daa89a9088fc9145bfc81ffa5b6dc14a778e. 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/HKJ952008510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe835215bf4975188045f75d9ca44067c12b067fa659f5441ad612f43ac7cbb74. 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/HKJ952008511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b50dffd9c1bc36a8e7cdd6b6877d6badce1547b8af11b220bde5a1a2d44309. 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/HKJ952008512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67676c1123b12b5657ff7f8a7743751224a6c2cb29b30885967617b701b38b02. 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/HKJ952008513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2f2ba1438ca6a8edbf573f3a7048465f58cdc648438550711c8e1508c8dcca. 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/HKJ952008514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89ac95a1563bf9e48bee94c1bada1a3d6ffb91d3061cbb39e138b0aaac898f. 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/HKJ952008515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e30aa841d0627304940509a39a84b1653c5a9d1939be429c143fe6ec79e883. 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/HKJ952008516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a23f5722f4f43802772e84b849f20e9c492d8ec58d625f9062a1e14d06b4ad7. 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/HKJ952008517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02068e16a4f3d745512a70548043e5e5bbd2a7506d431a0129d5ee66e16d872d. 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/HKJ952008518.
逆着人群奔向你 (电视剧 《你微笑时很美》 推广曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25db4c373556c7f6427338d0d315aa8fc73a0449adb2fb3a0b8d334f15d1d99d. 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/HKJ962012538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6917dc51662708451368b22ed6f9efa07f3bea4d06845dea7978e95dae93bf. 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/HKJ962012539.
第一默契 (电视剧 《你微笑时很美》 片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5f6e8c6d9679958470fc6de7c6673c913e6ebabf3adbc1f966da3dfb663d65. 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/HKJ962012540.
追随光 (电视剧 《你微笑时很美》 主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5341cdce9672de17c287992d60de702e640883e8fca25ca854af56fab0decbd. 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/HKJ962012541.
漾 (电视剧 《你微笑时很美》 插曲) - ck战队曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28dcbe0e6e1ab871383a512d5fd598f24dd05a51aeed7b91a76a1418454d60. 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/HKJ962012542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6189e4191f608402cb91a6a251f2f65186ea2cf2823971eceb3ae63178267b8f. 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/HKJ962012543.
逆燃 (电视剧 《你微笑时很美》 插曲) - YQCB战队曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c23dafaf465304450cb96e53a7e787e6684f4ace0dc8e6d3a7a7104d24df3. 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/HKJ962012544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e848bde89913bede2439d7aa7f577a24e638954e7a8b82cf1955f8a6ad10f55. 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/HKJ962012545.
锋芒 (电视剧 《你微笑时很美》 插曲) - OPL大赛曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f5ec9d77afb5ce5e6f589998398743c9e15616816f3a10fbc75e84d6c77137. 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/HKJ962012546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83bb24b1201d35e7919ba680244edb3929c41584fcd2f552058accb0fda9592. 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/HKJ962012547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58150304e47b349dc8ea51a677b4fd08d880754d8c3295acfeb8aa2a10b0d72. 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/HKJ962012548.