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 0x5702d98bf99bb0020faeaa31506ed7db7c47de24a1d43ab2f6d1d22bff371108. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61304599-9a37-441d-acbf-12e28d2d1c92.json and https://artists.proofprofile.net/proofs/artist/61304599-9a37-441d-acbf-12e28d2d1c92.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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3566263839eee9204668df7d122f708af681d8a83cc85f4a73b82cf9857b1672. 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/TWT951600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcec6ca3ba6bd3b1b900c430b3f158dc0ab577c9e31f282b5ce750c0a0fbc32. 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/TWT952100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ff6fc23c8b9f227ab80bd29c0d0244a24aaff9f8b14e12871eeed7d475cca. 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/TWT951900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b696aaf7fb4029812c65fed625eef380269a22e0f39d0e7610aec6bde4fcc17. 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/TWT951900042.
幸福的寄望 (民視八點檔《多情城市》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd582692206131639974d7996999a333f17a1528512326831648f8251ae3c47de. 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/TWT952000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901c844d94597da711fb07ff7aaf7a2ae25803e03b15d1e9202d9dccb2216a0. 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/TWT952000013.
若是拄著落雨天 (台視八點檔《生生世世》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4a16ad5d90ba65933aff23c72f7cf679ba9eca5cc739c7b2fe0d4a757d3285. 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/TWT952300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101027b273e3e9d57e5976e8b7b1f2c15a0ae4af7e087088225158e9374e65a3. 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/TWT952300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd63e6a2ab0df076eada1c3e2eb80acebff65ae173cc671664dcb2fa003f0ec. 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/TWT952300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad166fd51d37b40ac48761ca67995769eb86cc4b7892ec56dfb8697d87e5097. 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/TWT952400052.
當初的咱 (三立戲劇《忠孝節義》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7318c30cf11c32d31f7ac3647a9085b2f60afbecb61e61f1c35df05f9363db2c. 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/TWT952200061.
愛毋是一種罪 (三立戲劇《生生世世》片頭／片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b6002c2dbae4edc44e28cfb769706a3ca199efc679c9979f06803d9d0f772e. 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/TWT952100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16b2404135b9201513789deee53ad9663f1170a8218620d0247f4e4337cbe7a. 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/TWT951900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7663600a11b98d6f10413f0d93d807efa1dc4adb91e124b765435738e1495650. 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/TWT951900006.