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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d1764e07a30b1c84c2e0bd7cba6d076c4bb04c1405d2c0867dd8904e7f2ca2. 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/bbb47965-60c5-43aa-a3c0-94b6dd2639db.json and https://artists.proofprofile.net/proofs/artist/bbb47965-60c5-43aa-a3c0-94b6dd2639db.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484014f3917ac602bcd2f621799d25a1440861bc3da702fbb5cd334fc60f00a1. 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/CNZ501900953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602ea6e1ba733d55358d77d26fe2a370be1f5e2a008401969941686d16c9594. 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/CNZ501900960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25990b1790700172ab001b63526b391514746f5e9d6b025b765515a13b5230d7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/HKG732427860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d593d3478bdd1549ea1db023bf47e7bd20710ff08615c28bc6fc3b19d80e57b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HKG732427989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15474d27ae3247795824863eb9c1c82396d36a949da8f47576d2fa8d965356eb. 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/CNZ501900933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21181046f1b92c1db80471e67217645eb4c43c61332412f0c7247bb566587431. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/HKG732427848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e2b01af97f1a3edb279d9b8899da08fa65eafa9a8a49b7896b23d6c8735c13. 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/CNZ501900939.
星衍（《我喜欢你的信息素》广播剧第二季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bd3355f7473a069e50abee584b6e82d599f76fa67f1f428a406e4ca466983b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HKG732427851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462844d8fcdd2a5fe60f43172f2fc648698c3507ba9fa40ef6552952999c62a5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HKG732428141.
三分甜（《我喜欢你的信息素》广播剧主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1341374b5f28412d7c78b003afe39f528a8c9876889a40340af8a94e59a6dfd9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKG732427991.
入池(《不要在垃圾桶里捡男朋友》广播剧主题曲）
入池(《不要在垃圾桶里捡男朋友》广播剧主题曲剧情歌)
不弃（《当年万里觅封侯》广播剧第二季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65755e3db6e28a1a10f67ff19bb0491b461a512474d6aed7bae86d0566d16c9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:37Z), 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/HKG732428107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef845fa69e56109a7eb96ca5a75cfa10c901e6315db5c9014ee0c6280afbfa7. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZZ972321144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cdfb24b2e62f38b5567afbc84d0473eba48a52e0e8e515522e349d91c17bb9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HKG732427835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c697edf069f66d533f50b04df42a21bbf1d92f9c6e5947174104c63e5256477. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ972310642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac84f1bc67e6d3571c3063e9b62676bb4dfe3549cfec7787f694269289704f16. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HKG732427969.
曾有青鸟衔枝来（《判官》广播剧第一季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cab44720abd4d6b119b8bff68f13992041beee6ed9d3a81dffb673e8d683a2. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZZ972310624.
极光入夜（《小蘑菇》广播剧第二季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6125db7b10359e128edcf5c5fbab7c1c81bffd19efacaa86e3951b091a3a840. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/HKG732428133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb21cc99ff5619b0c5442d0cf3aa071f9fcaace65048059022127e7b52d2e40c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ972328906.
闯入一片盛开的夏（《我只喜欢你的人设》广播剧第二季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e346a020349cb4fcd29c1fd73cd8be4648570fd5eeb34d713b3b88b96b419c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKG732428073.
凤引长歌（大型古风广播剧《凤于九天》主题曲）
登台赋（《三分星野》广播剧第二季插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d033306a0a822933a25bf86e115984e9957ed2ab01cc12cc3f7269853932d7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CNZ502200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ed71eae80479027c74b0bd38e9b50ab74ba8be9386af17d68dd1d893761dfd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNZ502201173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32062c6b67eb746ead2100862d3c0ba1117f1ec22eee3e2bb1d7476f474e64d. 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/CNZ502201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6543a7f440e107870e1b75761f011a9b50c9a61ed01f323092acec9efa4b07. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HKG731591351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3652c9f899e716da1932d0b8d4cc6bb7e1cb7c8614907ed84e4794a9cbf2299. 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/HKE022200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068fdfe5ee7a09354238904838c67656afe40b84c0dbf5ea9d6f0335bee9739f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKE022200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e782e1162bd7cdc853c176367011f5f70d9a3491dc440b31dc069738a92aa6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKE022200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66cb941f72f628b1758208b1fb0cb6dbad971c698cf46cf9d2a46c5b67a6e03. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/HKG732427939.