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 0x2356c4809e946a6153481dc27623f0eb28ce397690d334612e61bbebd1e76ea7. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d76662c-4ed6-4310-ab35-d80d0a5775a0.json and https://artists.proofprofile.net/proofs/artist/3d76662c-4ed6-4310-ab35-d80d0a5775a0.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 0x5946cc2a8a2ec71f47b140312ea7318b61cb2b6531721c7f3a9ae1574f0760bc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKG732230244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1d9ebcf52f8b73193a84e4858536d6a7eeaf01e53fd41ff91c8d0867cf91e6. 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/HKG732230248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79ff4fa5c086cddfee147e08fc20feb6595a8dc178373df2fa644a85a45691. 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/FRX282109603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6f27cda3ff70b8e36bcdd43d12ae07a07f52ee239523f3aecb20a7d676a5c2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FRX282109606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d29270625dbf0cff29dd09e45b4164c2fe0d2a28d33381c3b18b09c46fc4d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282109607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e218cddffa92a146671ff47afe0ca27f6105bef67545292ff9ac09e238c403. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX282109613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25da01f2104f09fe32d019326429f72cc64b971860307575f2f9d1be71e180cf. 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/HKG732140818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50ff6d31cb11b1550c15a2a6df6ee659a8cee8bb0fb94407f69adeca95a2508. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732140819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd909f8979cb948937db1e1d04740b1deb747740550f0d89fdfc37dbcaa46845d. 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/HKG732140822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c6530f44b77b1e8ec3a055e79eb668cc818fd40c6b7245ee55471a22111195. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732140824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b083642d168f3eccb6224642d99a6e0011a7b68892d716f302c224f011775. 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/HKG732140821.
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 0x3967723f639aa14c2eac5811cda10ca318a0634a04498bac426f6f3633b47219. 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/FRX452114626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c5d27770390c750dc0e36c5448078e11fdaf7e32a46f241fef03f67e9e95dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CNZ632301279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657cc46573efc49484f01ad0d3d18beec94e020e8ace2e6db2a21e486e20e87f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ632301278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfa2faeaef70e6f02f1a3bb61b55968c773dca6d696130161c657d33769ffd5. 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/CNZ632301219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9c3c3f5f445e18614f3cdf86c705d2e12699cb5ca79cace6b963cc75d0937. 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/FRX282184108.
《致我们甜甜的小美满》 网剧影视原声带
甜甜小美满 - 网剧《致我们甜甜的小美满》片头曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8140119ec479528dfd4b6cd148e1fa55045e0fd7ec1986f10da2dc53e609ef3. 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/FRX872028240.
有你的青春 - 网剧《致我们甜甜的小美满》片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09520c626dae76ed38a881c8ce0d456060929b80e0ca1b3ba2e2a1436dc901c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX872028241.
怕光的人 - 网剧《致我们甜甜的小美满》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab2d9a0b93f03fc46d31da20be58c0e8dd2d45301a4db306756033d4d972928. 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/FRX872028242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e410f5b9ec55f14915dd60c02c401247255e24c7ceb1280ea510e88502a985. 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/FRX872028246.
歌曲零三 - 网剧《致我们甜甜的小美满》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfec7b2631f61f11860c7d877183f7dc4bc75d1880f219ced4a8eb02de6c7c0. 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/FRX872028247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea7a2fd2dc44d030bd4dd1ee54278795a2959fba5d6653c4a6bd4eb8f8764d3. 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/FRX872028273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4de82420528d90940863a44d9e52d22cd0d7072ce2baeeb7157417e56edd22. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWDL72205965.