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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc531af3e8699c953884849f468de63a35feb3321966f0e9ce239132fa99d0a5c. Chain 2 (Bitcoin): anchored in block 953600 (2026-06-14T06:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f32a9c1-945b-4f53-9ecd-b32ba55de0e6.json and https://artists.proofprofile.net/proofs/artist/0f32a9c1-945b-4f53-9ecd-b32ba55de0e6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453b243fd102edfc92c69a78f017a528cfbec7f927d9fc9a1d691bc13c7c36b2. 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/CNA651201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc533648b3b0030a5153bb296d122c27106823032f4f395f7732496bd8ce0137. 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/CNA651201248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3fabce809b067b8cb11677114bc342c205a49ae7fd924222fe635d188e6dc8. 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/CNA651201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512894fbad5234f8c753b5162f9f34f48b193528d951b20b434fcc8c4874be5c. 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/CNZ171500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453b243fd102edfc92c69a78f017a528cfbec7f927d9fc9a1d691bc13c7c36b2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNA651201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc533648b3b0030a5153bb296d122c27106823032f4f395f7732496bd8ce0137. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNA651201248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3fabce809b067b8cb11677114bc342c205a49ae7fd924222fe635d188e6dc8. 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/CNA651201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d75ea275effb23d0a9ac65ffc1565dc70550d6eaa2065c49d9aa848143022af. 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/CNZ171500206.
幸福一家人 (電視劇《幸福一家人》同名插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564f66faac07c998800578544877bdf8677a30d9a54154ae55dc4d0501cea28e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CNZ481800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288a95adeaa6b6a179e51ae61fa30b303c8a439f759aee652c9bb166ecec40e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKE571353407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77385bde1dbf7f91129e0187fdf07144726f855df8f2a519f90cbf43b88fb49e. 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/TWB670902408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd182bce3097d18f2aa3b5de842e428698fa49bff218978ef71e890c498b83ee4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CNA651201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453b243fd102edfc92c69a78f017a528cfbec7f927d9fc9a1d691bc13c7c36b2. 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/CNA651201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaede93958b4a451b381252b0036c61fabd0c1a9817739c81d23cc00ca235f273. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWB671104404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f5eeafbc2b3bb6cf4a2b2ee5e78b2221af54b6e783ddecd3fccc1557e6534c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNZ171500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd182bce3097d18f2aa3b5de842e428698fa49bff218978ef71e890c498b83ee4. 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/CNA651201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851417ed83c999500178164cdd05c828b668679c6369621345346a074625c7f6. 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/TWB670602210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698ec0e693e889d10cfe34bed8efcb3fbb3eaaa171c9f2d6d05ddb615df43402. 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/HKE571506401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9eb4feef857dbf12eb51083835b4643ac8b6c3b7ce7369f8e8a99b26d6fd52. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKE571506402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c715b9d5b34be559bfd872dad3389db55592cd87dd2d9226c62223ec36b8408. 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/HKE571506407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5031751b344d718ea6ffc274c2931ab5834e5ba3dd6bc13cb4cb7e455d572243. 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/CNZ171500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f9be9015f691801ba0b2d23032b917c7fbc2dba0d59898bc9e0c42365e585. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWCC32416990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b724285cb4e25bc26bdf30bb54c1f76bec7c659e1e20d32b8868be54b491c4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWCC32400436.