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 0x3e231ef02481643c8458babcb749e9c40e8d72343155a118925c5d179254ff3e. 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/72369af0-e714-4849-8665-fe6ad9743581.json and https://artists.proofprofile.net/proofs/artist/72369af0-e714-4849-8665-fe6ad9743581.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 0x6a56a7336881e29600f97ee8e7c897767f8c85143acc19923b81cae33bff0f25. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWCC32003694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f32da5aebcef8aa6af582e7b80785a7e2162bfa8030de33757c44ada6c69168. 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/TWCC32003428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0225fe42c858d9d19f89505917a53128adb6cfded387c20c4e3ba6dddde8e2d6. 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/TWCC32003753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca735c29232f2768d28a686495b5627dd7c87a11846063990de454ad89632ba. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TWCC32003754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2374222f4a56b2dae1fa630538ed74c2c23520437430555c1829f50b13172b0a. 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/TWCC32003755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733dba1414bccae999231c706f9dc80de331136a1c9bedd90f46a62132eafd1. 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/TWCC32003756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6e82840dd2383efc5198c1f07c7555b1cedb511cecb37c6298eabfd06b074. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TWCC32003417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe240ca39258ccbcb94d512e6e63bea5e02e1423ff4f06ed8b28c417a1896705d. 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/TWCC32003758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e41ac52cc6b7bc34381f19ffc96251596c46ee6fe416c7ecbcb09df1d084db6. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/TWCC32004957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a654fcdb87640b3fa3fda3b28c7c0858b377514a1e5e6a85116c88e72e1e7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TWDL72200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3453629c451d31e7c21109ff7297fc4fe5f6b064a11cec55d447467e209ca8. 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/HKG732348057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3b98f56b219ce1bc4a1c6946ba6b49f276e0dae4a525c4bb2317ea8a96702a. 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/HKG732202933.
Crossing of The Star (The Theme Song of The CFS 2023 Grand Finals)
风吹一夏（定格在这瞬间 我生活你主演） - 恋爱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aceed5ddaa03ad6871426ebc9977693629666e3ad7a0f1606e75fb028864a8d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/HKG732404523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52267521bc8a5a60dc039fc136f2d06efc9047fc6c5e879b1a9269700149012. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/HKG732404522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5350dfc8b00cd35cc8f938b1b5033a73ccfc40954bcc9e22043b4c534f7fb0df. 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/HKG732432390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52430eb2ecb946b0045c16436ab101ecec4d05d5b65f06fd356bd528d5c07ff0. 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/CNZ682300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b40d0a519ab36a36c300c055984aeb906add9f228534c6eb6d6e438dc3acee7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKG732292587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027edf5b96f90659e8d0518e8176034a03b248419829df710fbbfa5bfa5372d1. 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/HKG732292591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eebf0adcee84b91ea60a36b4549eeb6e4b2ed020fd7ab65ce428afa9f39431e. 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/HKG732292588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b681f3fca4008fe89de4d684fc5367a588724adee0769db3774e6f083ffbfe6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKG732292681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987d20120a33d1e7dceb2f986c3d6fd52fcae558fa32247d7337e795178aecda. 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/HKG732292691.