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 0x49cd01254ff7a31456460e418fac98b10f6d950a186cd8aa18d34754dd5cfc91. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4eaf295-7b5d-498b-bcad-979fb46d37f8.json and https://artists.proofprofile.net/proofs/artist/c4eaf295-7b5d-498b-bcad-979fb46d37f8.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 0x087afd923e1fc24e538742366a3f2dd4c187f416eb2cefc224dfe0c3502200ea. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:17:19Z), 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/QZES72494327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd1131c2a908e1d93e2388cb850db68e7ddc97a95f1490283000ce61a700f18. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN82479222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f993672cfbe65964722ff6ab9c30dea9908f6a4268ab43f21fe748c09c0893. 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/USLD91759776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd580431994112097663998957442918665e5fb4935db523a859045e5909fe9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:11Z), 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/USLD91760671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f99a6bdc8d234c473578004171b2d064e93ce048c5f870971ab8faea74f051. 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/USLD91761669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9f9fac002230dfd5f3f42b9d1a930a0b2da507a19950d41d250f5798506c66. 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/USLD91764880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12341de73c7bc16c30cd27dbaf73f65564f21654a8d3e6ff63df6a5f7d8208d5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:11Z), 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/USLD91765577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86896a7091080f7450149ca45c01648da5d4ac07d6b3326a4eb16360f8a7293. 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/USLD91765578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55d075f899fd16231c684abfb58d2a3165f6e9a1a92125a16be67c42f88c6ad. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:53:58Z), 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/USLD91765579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978754b0f211b874ad510e6ea15d4a70697e311fecceb34ee4f68246d46b1ea5. 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/USLD91765580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4d56b062ec2bb2051fcff384d6593f386dc74011574bb654638bc98830e8ee. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USLD91765581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9f9fac002230dfd5f3f42b9d1a930a0b2da507a19950d41d250f5798506c66. 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/USLD91764880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704171a1ae4cbd1ec68e9e23e4bd7812d10f6027b68a938042035a827267685d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLD91765582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90472cb49714b7978ffd04d161c22038613f8c864f77333a8678685586c6d456. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USLD91768573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d2d893559f889583145c0b87c4bd59950183fcbc368bd619c3a925ffa4fe65. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:40Z), 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/USLD91768574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d71704603186e46c5cfd1021145960b622559e30612a075ba9d2f3a5721d228. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USLD91768576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350b6caa8a3fd1242824b1b0562e2f6a7551570ea1d09c81912a48379b494e08. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:02:18Z), 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/USLD91768577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3158405e1144f5392191a1e44f0a8f066c8edbe0945dba23735af40d9fbca3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USLD91768580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc084c87437c320c1395270674a99d6b516f9a6fa3daf3059447e9404f31c99. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:52Z), 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/USLD91768581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ceebd98fa94e03b1eadec9f2b1431d8a35284ffa93985be27102e2c5cca4b8. 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/USLD91768582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcb6bbd183a8b78d815b5f0fc445d04168d2468845b9e3bf865aefe80ba0f5c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USLD91768583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fdcc8a6c837aecb08d58c47ef25eabff71bdb58d3f9c289f892a7dbabdf736. 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/USLD91768584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d6c98fa0403a148d1fb1b97cadfe68dca64e5f4266616252927c471c8e6d09. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:05:35Z), 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/USLD91768585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd079454fb14c315445677603a297e6c60f3d2aaa8fe543f913a11eee100375. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:40Z), 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/USLD91768586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4b274a80dd38f9ff6df01fbf095bb7bcfe4fe2896da9393a137287bda61be1. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USLD91768587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758f6eaa9052fcb63c004cc1fcba6b3035e38ca748771a38ae446a88a4c080b1. 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/USLD91768588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5bc6a114a45758e8e5aec903b23c8340dd8d6111f0505417e208fc78d995c0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USLD91775623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034c1653c5edaa4996059a152f9320ee6575dc58375200443993c2487a5e704. 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/USLD91777266.