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 0x3fafecd41e24ca28341c7f0501336e48a3be3f34fc1d7ea3cde22de920e437b3. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b44aa3b8-1b46-4578-837f-c111023f9ee8.json and https://artists.proofprofile.net/proofs/artist/b44aa3b8-1b46-4578-837f-c111023f9ee8.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 0x41a00e6a28bac1f0444d268709e1ff9bab0d344ee663c693b42e875ed77c48c3. 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/TWT951800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43860584786006b7462d0ae3722b5abf9c57034130df2ea1124582c8ed49ad00. 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/TWT951800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8bd1845d63065247167a7cc45a0210378d756812df9c7ded4a6edcc4a4384c. 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/TWT951800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320e9cdeb1f26ca463f5627893ddc410ea06891143596aa4ccd9ee199b6e7f46. 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/TWT951800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbd4b23fc8368012301e2f4550c5c0672eac5f01dc95de7e41528f150779b95. 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/TWT951800060.
咱的故事 (民視八點檔《市井豪門》片頭曲) [feat. 郭忠祐]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609af33da24f68aa6be4fbfa3090bd40d64875de3d94c6ab41e95564fb381715. 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/TWT952300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b2da7fd6232fa2e0af95b7d2ae2c766a3d59bcb94184a1234ef3b35dd3a72e. 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/TWT952300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16214af4857208cc767212b195e625068cffcfca374b6cc99f28f8d6090d80. 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/TWT952100033.
予你的心誰來賠 (台視八點檔《美麗人生》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622556c502a11746a265ab4302421ecd242c79670a2d3e193c449841b4329be7. 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/TWT952400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3e5ef80b7b18ee703a21fb7ef6a5fd7aa025758ffa7f432664487a94214fe0. 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/TWT952200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da87aecab15036f34042820bf1bf319e8b7e930bc1fc89a9d181db68a8e73d7. 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/TWT952000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52af9facdb97caa59f1cde7ab0a52f2030f0f5f1cad6b7b379f7f3b22bf4275. 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/TWT951900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9755c53a569023f411bb21eab96fd1db3b5694d33d7eba565a14267bb5fa5a87. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:29Z), 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/TWT951800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeea438e689fef65fababa26320fb0e1b4265dfd8e2b1c35bd246bbdaf20c1b0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWT951700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458a935880befbdd5e879636c49c14e2a97965e9855417463e8c67291ec3d76e. 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/TWC612214401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a5b36a6cf62f248de34b0ff964361a5c1ca2981acb67e76fcbaabc257b8593. 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/TWC612214403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0546a3170ce3b7637cdf88284c7d891c0c61aecda779e88fdf328e80fe156bd9. 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/TWC612214407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b88d03131bb1076c065b568302aadfc2a3b1941c170dd82cb1cc606ec27217. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:35:47Z), 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/TWC612214409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc83435378ca4fa3dbdc47a6383b92f8ed39fa7e81510b1c850446cfd3b8da. 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/TWC612214411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb69f05afe5755eefb4955eac822a8369273c2c45decd020587a5eb57202ca. 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/TWC612014001.
相思伴月 (民視八點檔《春花望露》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfad253fb9e0d5b197b5d995c65a403d66895c6c6f73ef4e7a8c20258def7ba. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TWT951700031.
愛·無你袂圓 (民視八點檔《多情城市》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f59933eae8c287c673eea3cc7243e20110cdac41ff48158f813986ff68152a. 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/TWT952000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64f05e6a7c4626c0212465fbc559c24d7e67df1b19cdb05a47b139b10cca6ae. 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/TWT952000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685775105ffd0eb847426d8268fec280d27afe19e070f8502d05e0cdaeb83f81. 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/TWT952000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e383004083c115f243c67c28e459ab9a53adec823d73824c0522c218f95784. 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/TWT952000005.