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 0xf209f019aa034a0b8367054ad9a35228da7ff801815974e2010335135e8e2f5c. 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/c67524f8-638b-4b8a-9d88-5e2a85892fc9.json and https://artists.proofprofile.net/proofs/artist/c67524f8-638b-4b8a-9d88-5e2a85892fc9.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 0x78879da39b5842ad8983d418a8ab0b3cf85bcfde31fc489b4e09ecc049a653ce. 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/HKG732324921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225adaaaeb2d097d6709cf7d6e8a67e026929b3c198e90d90bbb8afabe4fbeef. 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/HKG732343581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f8e4d76e0c8b90c50b0e654c041cffba9812e9141e0ec36837697924498b10. 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/CNZ882400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c665618bf310a0bd2e34e59d162841187132b9a1e041eb6c39ef63686f05ff. 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/HKD012312294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc645b51457c6ab753aaf9b6d5e57df16b88f5cee70e259aa29040afa2051594. 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/HKD012310185.
荆棘中孤生的花 (影视剧《惜花芷》主题曲)
荆棘中孤生的花 - 影视剧《惜花芷》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6eae52cf088268983c5113bd5c87ecc276e65436afeefca3767577f78d28ae. 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/FRX282408944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a5e7325275e8caf18540f49f4512055b6e86414814a228026b96bc466af61. 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/CNZ632400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61297a408e0a9e0df8d1e480ad81f56626c64cd48d0cb3fa3925244f29a45d23. 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/HKD012291064.
热辣滚烫（《热辣滚烫》电影热辣逐梦曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da420a5939506b8a1609c8ac1f4fff26103839cc7a1968a86bdce97ecfc8c68. 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/CNZ632400353.
想念种在你的城 (《和平精英》2024春节回家主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebecb5a1fe31376e072fbf61132c2b29fcad08d15d3c6b3bb8d6e143da1675e. 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/HKG731682748.
聽你訴說 (影視劇《我們的翻譯官》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5652c7303348c2e8096c09580b50748d61d2ce32a930256873d39feb3a52aeeb. 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/TWU712400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b4b8c2164b3f0184f145b1ddbc39db9a90d0163646c80338c026e6eecee4b. 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/DGA0Q2365161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2012155f0ad93e6f49d9db0a1dc711da05bf23c80cc48dd2b030b5a99bbad92e. 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/CNZ842300756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9cae99a9f2f3e743088da37b6c6e83f0a455a80045ec8e916ea97ef7c8c78d. 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/HKG731606316.
我們終將到達 (電視劇《追光的日子》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cf2e5aef9056938691489b49a2282998d7ffbbc6cfedaaf5d141494f53c992. 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/TCAIK2463077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707fc122d6e0cce3c71d63bd49a0f7fc38507b21f9e86d12fc3760c217502e36. 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/FRX872344431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225adaaaeb2d097d6709cf7d6e8a67e026929b3c198e90d90bbb8afabe4fbeef. 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/HKG732343581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff3892d341b0ed57776fd9fa4215746c3a622b0c7a8a8324d45d76ad3e265d. 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/FRX762367845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740a5edf480dbdc84d9050097eb8555f7293d868cd1ad68a5470a77929144a9d. 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/CNZ632300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31fc14a669aba6d4857c235129a692d9f0feef818797ff641d99eeaff784ca4. 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/CNZ632300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb1b4b985f5cca77e3ae42ab033bfbd972bb0ee24a8182527bc1ec85fca0a94. 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/FR59R2320448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49539efe453424d1d5abf9ac2ca9104559fc96ad8ebad54ec0f3ec76465f7fc. 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/HKJ962415452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572df0f0c91b3ab9d4340acc2db45d19aae2ab841d226e74885cb4f53806589. 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/HKJ962415442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572df0f0c91b3ab9d4340acc2db45d19aae2ab841d226e74885cb4f53806589. 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/HKJ962415442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579a71c0b9e88bbe5fd7a7c7a3ab956be18a38bcbe58b25e41acf699615ae399. 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/KJUU94044453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d08d9c56ec1361f3d31a87c4af04b62ad4f21e809660fbcf0ec1d6539449fa. 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/HKD012369530.
七子之歌 (电影《多想和你再见一面》原声)
焰 - 電視劇《春花焰》浴火重生向片頭曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b7d55f20931f06ceaabf3a6f192b38925de972afe73c5e9f6d9a5e26b20db8. 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/QZWFS2496000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5807d5f32bd4bd1f2847402888f32ea2d01df6ac576451b2eb8fe1f4537a34. 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/QZWFS2496001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca390ae557c8c4b9fe0a102afd36c7da4aaa3a9be9da5404581096bc570c9f. 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/HKJ962415469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3d1f2a9355980613f4e483b3c737f138279a8b998305fcfda9ea175fa6ad4e. 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/HKJ962415467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49539efe453424d1d5abf9ac2ca9104559fc96ad8ebad54ec0f3ec76465f7fc. 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/HKJ962415452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572df0f0c91b3ab9d4340acc2db45d19aae2ab841d226e74885cb4f53806589. 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/HKJ962415442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d8ff6eec8f3b6b4095264caf61006361ce882ebc90f66412b820610a1886eb. 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/QZWFN2480528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ed7b8cdbbe2e272b2585d8f792fa99442aabd3dd6c901756e4c1c73d383d19. 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/HKG732124834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3819a2322c7148eb229595f7a69f8827567a288c6d1024fb576b0faf294a8a64. 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/HKG732152856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dd8b5bafc3a551b32b6176ab1bea096b5d7aea370e27050abd5733dc83a34c. 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/HKE022258036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6eae52cf088268983c5113bd5c87ecc276e65436afeefca3767577f78d28ae. 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/FRX282408944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49837c42e9858a1e3a7b8ece6ab35234f5f96b3c7fdea766fa4edeac1a37c4b. 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/HKD012301176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47290e67858c7af2a3125a7ca3bda97ca6ed0e8ee20140661c1748abf514ed6. 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/HKG732126902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb974a21fb78ff6fa9815123852512501cf4783a3c2b0527f8a6a67cfc1b45484. 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/HKG732152848.