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 0x054322312358cb0384c8df667c117ab6f91f3abeae45a34f9dc209f900793a07. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/838dd01c-eb2f-4d36-8eb1-f7e72d12174a.json and https://artists.proofprofile.net/proofs/artist/838dd01c-eb2f-4d36-8eb1-f7e72d12174a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
有你（《你好，我的对面男友》影视剧插曲）
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 0x453811d201390b42f2a9d4c057d9299985711b12e73623266ae6c45528bef788. 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/CNZ842300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e47cef6db7aea298a1b55e258332dfcdeaa038c91fabaf1da4bc107437d5d2f. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR10S1615660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe19544fed62dc36a6790f9d0e8c96567e1e2c28c1c8c559453a232c529c7cd. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FR10S1615661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a83539b217fc82d92db7276833b551016c9e15b15c9dd05ee91effbd8393398. 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/FR10S1615662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93280a4a6602068a612291a234c62c7db6076ecaff8f3d08eb8a1803465c50bd. 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/FR10S1615663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c50c3fe173db555d4f10786917396ee1a58cd643af51ef898808f2c70e3b9. 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/FR10S1615664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d1249eea3a7b3a0269cf8eed0eae2796abb60a852dff1d9264ce48405f9eac. 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/FR10S1615665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a117e53136f6c9e37fe9c4db84e8de672afeb8493777723ec5df4bb954977. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/FR10S1615666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f684802dddd260b4d02aa8d6e5c2c10237cf7e466aee8db4c5e4312b680a41e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR10S1615667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40425d2245dee63ee0c7207679ceb4c33c06014655e2be27e460ff8cc0f6cb01. 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/FR10S1615668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8290503892bfda8a872f294078eb293e5b739034389e09144acd857f18690c6. 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/FR10S1615669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac901fcdfe137100bb9626329f3cae89e57026e28f5502ee946034f7d94683. 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/FR10S1615670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0386ce8bb09b61e603d99203ad431bdedadfd0d14bb067cd4879310752c39c9. 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/FR10S1615671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf311b659299c5ac3ba7731e1e695130e39c28246de9d23663065ddfb6d95ba8b. 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/DGA072307712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caec611d6c229b98086954513c5559580c49968827cb56853bb62dd1600b702. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKG731868639.