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 0x9665ca526c3e6ebb0a86c13eac24faa4758eb0064b997ee609ddc421da2de325. 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/bd6b44a0-9d76-4cd8-8de4-262160941d02.json and https://artists.proofprofile.net/proofs/artist/bd6b44a0-9d76-4cd8-8de4-262160941d02.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 0x555f154b0912b90c02ec097dcb9e73873de1774fa1d8be696c0d112337221ff8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/HKG732225543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555f154b0912b90c02ec097dcb9e73873de1774fa1d8be696c0d112337221ff8. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/HKG732225543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ec94ab23e7c85241c7a476c5d59a32d2e0696f59282be90c1f47303ebf648a. 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/HKG732288621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3120d2240154421e0871335d69652d96ef78d14aeb45c52349a6b1d34c84e2. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TWU712203088.
遇见·璀璨的你 (《遇见·璀璨的你》电视剧同名片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9fcd25062571036e8f60b5c36d57a8c0fb0e5d9e3670e4836c01027131337e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TWU712203111.
给我个理由 (《遇见·璀璨的你》电视剧插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fcdc5bc5386923a3a0957642bde53d7db9b364039559f9fdbde6796cc55263. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/TWU712202875.
比谁都心痛 (《遇见·璀璨的你》电视剧插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf503268b2918e1e8c6f904b7b0317d1ec2f3f0bbe7c0a69627bafe7b8d738a8. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TWU712203219.
遇見·璀璨的你 (電視劇《遇見·璀璨的你》同名片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b152a4139cb67096a72087de67959e7d484a39432dbbcd4cda6051d83e573b3. 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/TWU712001767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a434c77ae27ef2785c72f148ab950b11c3abc3ef0421fbb1eac5b4e7336a2. 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/HKG732005947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075c8b86c06a80b72472826fe7f5f2a3410bb73b5901e85b19b68ee90a273e91. 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/TWU712001771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84977634e7e66d94754aa220ea3e1ce8682172bb5064b9d6eb61410c423e7baa. 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/HKG732005990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85be476f53454a90ec5674bca4dce85f058f0f7b7946229f72dc6e0fd65b9a06. 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/CNZ632401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429624dd28e885f95fc48998958c09aa6c07a2aa2a7f0da83e4e3f602053f3e1. 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/TWU712001768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c3e6551eb2ca4bbec2e3d944facd3bd78d10a666847e5a024e4d8a3091051b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TWU712001769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b502731ef22a32f4b25c7bdb904f7cf0647146a306be893a622d4769d985ae. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HKG732005857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd071a40c6bea4d8a441506eefc7bcf5b42fb3b2c4e141320d9ccb4e7e8d9ce. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKG732005823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7cb9c19938ed28bb9f570a3ba9c0c611c6f0fca0b61ca83677f796ca314581. 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/HKG732005810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90989a4495bfd4e929d0aabba8e2eafbe8b231168bfaf4b428ee377f112adaf8. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/HKG732005962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18a48e50ccbd0ea65ab061ecf32bac445cddc2df11851386b35f85ab2f8ca2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CNZ632401433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df0fb84628cd900b2789cb615e30e2c6bad1e9361af38ff85848d4d7162bee. 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/HKG732005905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e524e110bdbe2abd75c478e31ebf21a5a1856c999f94ff57289e452b240f826. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/HKG732005834.