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 0xee2ad9a90d0a09c318f236d0f14c4308fad36d6c162f55a7738d62e99beb5e28. 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/0fe66549-97ee-420f-8e12-80b4f6fbdc9d.json and https://artists.proofprofile.net/proofs/artist/0fe66549-97ee-420f-8e12-80b4f6fbdc9d.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 0x2b79c8bc25a7283d4efc8b4cd1ac04b0cd2edd270f64060e5f0a45ad829c81e5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:54Z), 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/US38W0510585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cb69c79651804adddd6757fc32669de624923757bc2a090173607917719e26. 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/US38W0510586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033d9966758b8f906d223001bb6905f02b511e7d828a41588e0d4e9ba6f42a62. 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/US38W0510587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1e0b9958fb0d7c7ab58dbba24586791b649cd740d1ae9ea848f9a4a0eee08e. 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/US38W0510588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe21370136437625245405d57861951816334e82faf949f8ed7d79949cac0614. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:06Z), 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/US38W0510575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ca9f0f39e9ca96712884fa3d93be22f6fa31354bab0459f79c8120195a72ed. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/US38W0510577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd165be08c602b1dd9e74a93240990fef8fa323255e1b6c071f5555d20fbbdf. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US38W0510578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280915a2e6a0c9d8b911babe88c1facb3f29e91387cc5fc820e80f3981b5ff70. 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/US38W0510677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad14ca71a2235247b5889372ae8da3cacad3bec1292a46ae643720f9f0ab201f. 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/US38W0510678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a22618b9fd25b42b5702029af09d7552f8bf092cf7bebcd5a46244ae8d6faa1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US38W0612004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9741cb5e61d5f01fb74ceeaf78830e85fa476e2f9709efe9b55073ccf9629751. 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/US38W0612006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206a184f4d24b70c1d856cfec2f7d815a310e4ae7bc5d35287bf45cc60254152. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/US38W0612007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff279e9376a032ec630b619f160c54e4fd2629eb37dca403d19b78dcaf240b8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US38W0612008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d700558511f7db48dec74b2686dc69b053adcf08e4721160219a58e41ab996. 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/US38W0715001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3808056982c204b279e6a3c568809ade36dfec48762c8e2ecc4c34d7dc35d. 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/US38W0715013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de8f3d5cb8e96fea8c1fb6a02cd4039b80bc3fc88ea6bf8c6661b798baaa6c2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US38W0715014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b8f953aa13f4fdb2b3d814a645d60e662e732c24081fae63ff723f952e005. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US38W0715002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffb75765482684ecbfbd60e84dbcac59c855bf1a46e358e44eff2f5733ef025. 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/US38W0715003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aeffec03ba860e52792c03ccfe620f2efeedc02e8a3462f419bc548da6d1a5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US38W0715027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea185f3cfb74931006cbd8061a10313ee663747163c619c7ed1bc913ea2a4b60. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US38W0715015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347409d13f91dda530b14f11bdbbca3d23f282c1e12836ddb7a6b72254d94b1c. 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/US38W0715028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc394c8d7afe3dc4db523d4b6e87d4c2c5da9664d7cccb56ef6e9273f7167b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:42:25Z), 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/US38W0715016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f3e7936bd163204b7062cec7d76ca8440419fda5b5dcda9d46df6c0e37e913. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US38W0715005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a95d3a4f44080f11830389305f539b7f5fd1f43769b38e1d8c723b6576101e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US38W0715018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cdc27e7765b9a76151849818d5be4b0d59f55f3dc5fe269f40035282d2662f. 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/US38W0715008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077aacaa12268cd253dab11f0c8b48d7b02f7f1a78b2aa72c9b6c9cda545e45e. 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/US38W0715009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838dcb1958c32439458dceaa69a11e061beacf54c7ed92ddf8d727de8b151a6c. 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/US38W0715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1065fcf013d79db8bd869bebae214140639cd8b674c86f3bfa56e362ec97a5ea. 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/US38W0715011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0e264d62d52ba94af2353756f97042824d4733678945e1a55505e4fa4df1bf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US38W0715012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7fe5f331c32ffc9effdd9b03c3763b558a0df068eb31bf2e08fc229ee7b66. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:58Z), 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/US38W0918101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4737ca7c27e257c63c1448aa4e000cd7b94df2890a489e04288515f60f98a024. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US38W0918502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76725ee8ea40ef6cde950ee06939a294f5baf79a4d388873b59127a09b7a7ba7. 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/US38W0918506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3f8bed06c9b37f0da7b66e59375c1d7f567008630af887c81652b5f50abd19. 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/US38W0918507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ddd9f64c24a07be82881e860181e9dc884db33c87807517f148a36d321f6e2. 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/US38W0918509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb341b14123a33e2b93085c7a6b49894a46ed11fc25b6d58bcd9a6ada9afb651. 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/US38W0918510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896f200d0516eb0c53024bba56176082f425c5ce8df068a27f0b887c0ac67ed1. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/US38W0918511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503423bf3cc080116c3cae2f527ba31b08b5913912e3f31d46060292bdfd5248. 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/US38W0918512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe000929cd6b74674655888b262ed95b1d26136a37f5b1fa94b590473ac861cff. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US38W0918513.