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 0xead90b04dbc330109ef77e9b294a79c44bbe4dff6e90fb3ee505734fe983b1e1. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11f8e145-88ff-4138-be9d-ee54483d656e.json and https://artists.proofprofile.net/proofs/artist/11f8e145-88ff-4138-be9d-ee54483d656e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
读书郎 - 《漂亮书生》网络剧主题片头曲
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 0x958da9e842c3de8f200ff596b3bcdc52f415fb17203be3d409f9e993550e3fdc. 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/FRX872009559.
云上恋 - 《漂亮书生》网络剧主题片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d4493f0e3b9d486038cd0e231f823cd348ac7c136902bdb2cca4a97eb0414. 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/FRX872009560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb2b6095fe83ba2c689da2526895dafbaffc9b0c59a47b0e07261b6e20c148d. 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/FRX872009562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a47b53ce934a81959c00ae41e02b108722e1998ac095e50a3c6bfd5c64d8a58. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FRX872009582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc072630b5a8affee1134acce0f1603dfe2b85279257ee071e108eb8d8f614f97. 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/FRX452030266.
Things I do for love（影视剧《半是蜜糖半是伤》片尾曲） - 杨芸晴版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040de7db7746508489e904526075a1b2e86931edde56dba30325503537eb4ceb. 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/CNZ842400679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b74f9ed7e104a73d509a58578604dcc7336376a46285fa06d367b245ed009c. 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/CNZ842400677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5542c57ab883174d006ced9f390a6ab58713866da4825bc901137729c08999a7. 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/TWC612050702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc122b30955feb280788d566ae8f9a4f15df439317ca5e65852a838bfdc78d3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWC612050712.
Say Yes（影视剧《半是蜜糖半是伤》插曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f5d904dd8a32e3ce8c90787bcaa7a25c8bb6fe6e096a08b4e4bb22b820355e. 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/TWC612050706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517d4ed2f6bf38c9f5016ad0c2774c224a6365e864dbfa17df155617d295edf2. 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/TWC612050704.
爱是（影视剧《半是蜜糖半是伤》插曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee89395fca66d78c0d9ff46d70e76392d0286573038c42c3ae106ce1424d3b. 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/TWC612050714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda505409621f54af727f8d720f1d1ffbff6f6a4f2f9f0db1d4d9275bd2b1eda2. 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/HKG732488657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc567db599f15c0a3abdf4c24ad3a051e0df300ddb1abfaf3674d9af57aec4e. 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/HKG732488658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd68ebd8d6862004f0f7c4bc5a8e7d06f5f794dd27f9911b16dd8c65cd365f1f. 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/HKG732488659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933104a24ac39893e988c3d87d47893156b07fae33a2ae562b835a79dead9b0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:59:35Z), 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/HKG732488660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a291e2cd66ac9c7da0c01ae109e20b61b19cb2cbac81c2f86db0fdbb91bae0. 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/FR96X1917765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950e3be366e3ea8fb08f711db2fbc45058fc09a91197c19d04a4eb68178773cc. 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/FR96X1917766.
中文原创音乐剧《青春禁忌游戏》 原声大碟
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb275599208c92725477d75b6068f272bf6b4b5c37cf44d0a8c3c059838da58ce. 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/DGA062293508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c998090b52fcc15344aa4aa7eceee514487b04d88a47355cc41a85fe7d87673. 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/DGA062293509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebad310611ebe2181119785a8fe33ddbb532f236b26c1659da0d9b16fdf9e792. 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/DGA062293510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31c855a5a0d4c3e7a54fa200eb3d6bd5e10448dc4739ac7f5076733be3742c4. 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/DGA062293511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88b64b8fd115bff8614d91cdf3875d5ecc3c0d9dc89b0a82a9020208b0f5743. 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/DGA062293512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc191b80565ee5384c1dd64f8c576a2c5c5e872f96d7189c49f4f813725127c9. 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/DGA062293513.