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 0x3d86404d917d3b243d4e09d630626a5682e50b6d86e5e2d2e2131302c4e4aeef. 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/9c4e3a85-e806-478b-979c-265e01df56bd.json and https://artists.proofprofile.net/proofs/artist/9c4e3a85-e806-478b-979c-265e01df56bd.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 0x619af03c8a1dfc094af1b905d074c17c74c352194a4e17eef8046a789f832ad0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P1319135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89e74d1d5e2c648b5e55ebdab6f074e143a78d066c49b47c33e03e027d7bb42. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P1319093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dc0489cf9d26886c46e6bb51931a0ed86b738e00252c7838d230c3094a66e8. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USA2P1319094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b75bf15f593ff1bc4c73dabdbe997b89eaa7c05e437054b4e25eac3326374b. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USA2P1319095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5e3d0e61e85e592b515b85bd7cdd737fe7a7dff5a67d37d836f880bff853e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P1319096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd673dafe0b2f842cad4f6f76bb86c8982375ea728c1497ce99ad0311c50df4. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USQY51428847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbda3d6ef58f15b7b1df3075bfb3863a982cadfe9371185ee6d1a8dcca5c54fc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USA2P1319074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f88b9e2ad360d34379aeac1448676a04681313d4b8b80c9bbfcbf1b46904fbc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USA2P1319077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa87a91e5e7125b98e2f0d95bfd5a6f0bbd742c5a63325452c18c51616193ce. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P1319141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07205b3119cca01a3fd013984628c8ffcca9c09eecae49f45bcad47cc6b27fa2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P1319146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e64061287ba04a434498171c7473b56d35259d1fdda1ba564519acabc34a777. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USA2P1319147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76a3c1382d4d4dbb29fcbf86405a941b346b00d9193cdef8dfbbe23414e50bb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ZAC030000642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3980fb7488437e34b598a09db41092f7317ea7d55da66d0482bb7e8bf83d17. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:31Z), 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/ZAC030000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb86480f32b80cc183fce952cbbb7f2071551ce97e9b7138987515d3f3131bf. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ZAC030000648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e5d224f8b7a625f96b435dffda8f4cb62525d7de98eac74222e61ceeb7151e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USQY51443399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345e265adc2661383712bedf7678bab77e0b467f0d86990256a13454066f4d5f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USQY51443400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a88ae3eb208f0f6f2d5a13db1a9051043effd6ceb085ea12421d30ee3e8a73. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:42:07Z), 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/USA2P1319083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f72a8d28c1d0fd0c1692560fbc32c98964c5e5720bada5c8112ea97786b648. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:37:31Z), 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/USQY51443408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e217edaf865db6f1740c44feae66b9898dc816a2cee1a6af91711298b04f9cd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USQY51428859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf742b0148c0d4176f66b51ae852d39525f500382a26581456737ddc4fdc777fb. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USA2P1319078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e87a76fce94d22ae0ddb6692544f8adf396fad6930b6107beae44c7fd0e0e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZAC030100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c9f6dd3f3f476f43a0aab8cd4cfa2f724ee9b3705cfa75918b0b93e899d0b7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ZAC030100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aff7ca9f6581a466bd72035a914e02a3c37c17bf572008b23dee8ce2a3680e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZAC030100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d0327a61cfbaa2fc8dfabd6d0d6a1c1773959aa141d79cd51dcb16a48df0bb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:43Z), 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/ZAC030100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d81011c0310158918f211ff7795c96f27064e714ef11735f97e930f6f786c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:04Z), 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/USA2P1319067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b774ab5aa79e3130111e63f3d19747a54a73b1c5b0cf34841a93a1947b2b7d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USA2P1319079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579b080bf4eaa0ce21589d8270f07db3aa484df60cba0392a090ce27aa5097be. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USA2P1319058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fda1292ab57817fbd7a9ebd05a4df3c645290679e44f15157a9085b0fe9b42. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P1319059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf194d2bb78253cdeffbb42420b7c284fe78b75c7ba82291853c06684f8ad7e. 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/USA2P1319064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513d41a9a68539f734a6b49e7bb65260b2d62c2283973cca17b1b5c8ea18eb18. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/USA2P1319105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b7a28c7e51933df3b4b63d7edfd092ef05e18b1c5b23ac146cf311371a48e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P1319111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3731fdf4e0bf5ee4e373b045b29a5bcf5e3706c21124f82fa889b97f2c5331. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:29Z), 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/USA2P1319112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8297a03dcc15181860b47e303c31c4eb6c86dbcceed6f9bb4c0b0ff71fee2f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZA41S1904997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073784d9f48d5bde12f5090d94c3b072ea378001a87b628697c1a77e373f4b4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:49Z), 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/ZA41S1905002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f815182fa16744014b3d2cdcd76283934bdbfddd95e9cf9f827a3f8032c9a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ZA41S1905012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f369924b9c090eb5ef3220672fdfe4a025da32b142a7d36219fcb3f6384f5. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ZAC032207383.