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 0x65fe57228acab0d9455745fdc97e58f4807eae1a4c1aef81fd64f4b0accb2b49. 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/9fef0f3c-a088-4ce8-beb7-d427c0e097e8.json and https://artists.proofprofile.net/proofs/artist/9fef0f3c-a088-4ce8-beb7-d427c0e097e8.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 0xfcb3cfabb4302b1148ac219a08b1140338e92b92e390bc58602f506c80199a46. 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/FR96X2207131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c62cf79c19a73ca04f7af2ca29dc40ada09ed75d79b6709048d146059fe626. 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/FR96X2352214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abf72c820868e408db11271c673e2b2e624f6374da925924fd3fc583f6555c9. 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/FR96X2305384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb884a937097f8c3356b713b4a204a7c9a9cbee5be887d1f4272516402f2432. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR96X2209196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef35e825747f5990eb50722c66a3d31b5c39d7967d67cb126c9bddd8837454b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR96X2369210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3374631e2bc251c81f6d14f963f68377c9092470fd43d6b22526858828502dd6. 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/FR96X2352218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924871d8219b0846b0c5334af82f60f3b26b86aa70a34957d6c3d50f2bc4f852. 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/FR96X2224140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0384ec210dff2ab8ea9902e491b8f26c65eb2b362317ee0e2c0aa2fdb9dea9fd. 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/FR96X2207144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4020f12afb477945f8a650103c65ddce93cf721d8ab068308a34901fd57f7b6f. 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/FR96X2224135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351993f36cd8515886e9bc5a4095483143312ce37b11c2d4c1e1bc7f5f441f5. 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/FR96X2352221.
叱咤红人 / 原来你什么都不想要 / 友情岁月
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47637df501130f575db257be71225df757516d064f094c90904d58347d7483d0. 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/FR96X2219272.
前 - 香港特別行政區成立25周年主題曲
前 (香港特別行政區成立25周年主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86291fbfc8b6ddda44ac3d14ac8b0d4a9739276906b4c2f6d0a6626cefc3591f. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TWAE32203553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bbf953974a546db1702ce9b46fd79fac4908c7f08f3966dc15ff3bd0a2c0ee. 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/HKA719907200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edbb50c82fa9d273195d127e12df1b1e20802fdfc10fc107cdd6435d51156f7. 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/HKC630702229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ba8f6d96f46ede0f32134e2027888bcab7de94308a0ec5c4b96fe3ca9cd8c6. 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/FR96X2326372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf662d01b04e1d0a650deff360752fa3da2f0bd210cb45b78d49469edb2732524. 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/FR96X2322928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90206e219094783d842019516cb15500275b344a1fa45b006305c5bb4e650a8f. 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/FR59R2386534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb19a3cb187a53f2961da3450eb0baaea3f04731815e0e51da82a57c0f51e83. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR59R2388092.