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 0x2a35ede09f2fa09dc68e5a0c2d3c375acbab0b216f0a0b2ef849e581962b86f9. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/342816a7-7169-4ebc-8c02-db1bdd861dfd.json and https://artists.proofprofile.net/proofs/artist/342816a7-7169-4ebc-8c02-db1bdd861dfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
戏知意 (广播剧《胜却人间无数》主题曲)
信号 (广播剧《狼行成双》第二季·主题曲)
信号 - 广播剧《狼行成双》第二季·主题曲
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 0x1bbc8ea86408c8eadd1d07d2cd8f302aef3649634e3b0932de33ef54c2a7bf4b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRX452305903.
若非天才 (广播剧《天才基本法》主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c48336195ed7ecabda98be1486195e0e62cb32a9856f317026767fb6315e7f4. 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/HKG732152772.
废墟之上（广播剧《飞鸥不下》角色主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8cd6f39356cdb8c2e12f81c1611ff6dd2c84bb95454eb8320caa218b9aee5c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/HKG732154028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed70157247602779c8d958f030ec5021cd6f03bd4d938c7b6032b17a4bc0a19c. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR10S2305892.
砰然心动（《有种你再撞一下》第一季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aba55cb2a9d2d681a9f1238b3037fc7c4be562418565af48cb7c8ba133692af. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZZ972328899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c88426bb93fcfbafc2bb7ac3e415a814f35466740688e2763b6694badce3e5. 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/QZAKB2324600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84867701a8c71b3d3dc7cfe4b6acba50ff805c67c9be9f8257d7d6ed1deb2bd8. 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/FR96X2257703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c09e372f4f20842dca424275699c75e84ed9e5affbd6d7885f6358fb9b7e226. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR96X2257704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bff44cc8695716e98082b77703fd35b6a2602aaacc839ff67ccb65ababe0ff. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/FR96X2257705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6041f18f08145137796dd24bc2d128cdeb06cec9410b67ce71387ad6555a000d. 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/FR96X2199091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dabc40eb0bbc0c06ace93a572eb6287caa023c349ca8188d6d52d68a759414e. 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/FR96X2199092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f925c96647b59290ded63c92ee624d2d9157a56db81eac34272523fb160dbdf. 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/FR96X2199093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe039d9b77fa857bed34ea27a006dc7d5b7cdae7af1e5ed06f4a0483e4012041c. 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/FR96X2199094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760821c29d5a32c03b1109cbf9f548794ec10ba10e48468f86d2c6566b517eec. 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/FR96X2199095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07c261921b7521992a1c13d41caa46f4ee37fa5aff4ca892d6e84dc269ee0d4. 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/FR96X2199096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12504671dd1b26d9b32eae2c686b64bec9ade210b76a6964939bce43927625b. 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/FR96X2199097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166f68b44c22ac8314d04eb9abcf74ba8b957b200d6cafe55545a885ec753bc. 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/FR96X2199098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ae5352c3157e431437c086ae61ed3450afde1d0246a9bc9487dde2129e36f. 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/FR96X2199099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc39c43e827f63f39b804ec417de1bcffc59282733c6aa0ed467de43f99eaf21. 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/FR96X2199100.