1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfea0000689f0c7d45593ee01aac09bdb5215898797706b784648b86a14fb2584. 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/f8a1b738-6d4a-4661-a0a3-4efedbe336c4.json and https://artists.proofprofile.net/proofs/artist/f8a1b738-6d4a-4661-a0a3-4efedbe336c4.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 → block OTSBitcoinBlock must exist at that height 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 0xec888ff4c2395ac54992fd815227a9fba58ca75ccffa9a11a75b4faff361d805. 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/USCGJ1297489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff235702fd2dd39fc3548704b33f97efae41e767cc5399f463a6274568abddfb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USCGJ1297490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e119eadf3d711370d34185479fb9e0f19dd8824d8e29cabbad30dce7f3d1a5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGJ1297491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df79786bd8407c2b99daacbc7f32676fd9b312888430b2b332351ac103a885d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USCGJ1297492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8738558153f3de4dfb21902d82d132f644093196b37c64a5cc3becc93b67a001. 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/USCGJ1297499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bdd63b32cb1d710ce8fa52e182d5716e58cbeb8f805f7ac88804d91a61219a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USX9P1418599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5d3174b14b88dfaebfba95f447ab890f056bb293274696691a51cd2f213e8a. 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/USX9P1418601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe5851d1150e2cc308f2191dd5b9470ef3696b5fe0e4fec9e2c50053c2625ce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USX9P1418605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7e10275204790715a093354a7a43eab973df332bcb6ffc3e5a772dbc72b7a0. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USCGH1676074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271cbdd25953749e6a07d400075fdafcbebcc8feb2a21ae03c51433db99baa07. 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/USCGH1676080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605ff19f82fdd71771806ddb758910d3c53b94da756a0e23200ede46bfdd918b. 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/USDY41745482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaf374d360f2391e97ec55bea11d3378192028fa2cfcdd9520226ac6e61c091. 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/USDY41745483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb6c2c870d7bb9567503f97fa9c55bfb5eddeb7f33abf46bff444754b46d1f. 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/USDY41745484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72934fb692a26f1491fbc0aa9f1dd5eaa6156669c6d658dd85d2bce3bd347279. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USDY41745486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bec4f7221c0121378906f1d2f8143376879e50aa92368c1ac12c79461738436. 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/USDY41745492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a463f258bb459c0e5483bd3fe551a81ebd5d44f9b2400394e1f56e3580abe7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:31:38Z), 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/USDY41745493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17db64c766701036030411adcf83970a139cf1db221a3cd199aabfbe34ef3ee4. 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/USL4Q2058240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf66b5275ecaccf972a629ad9f2262b76fd5801227a58922f5a998805d3ea378. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:33Z), 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/USL4Q2058246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade1040077ea05e3230a94f0f4690133f67e248b151da06f57c99571f15cf4cd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USL4Q2058250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb8cb0334e5dd4352d1d2f011eae84ae20bb43a746fa8bf9562def8b05650c7. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USL4Q2058252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef3b44f3f20067459dcb7249cc5dfbcd7b91f16aa77ad1f5e3aad88ac5f69b1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:25:35Z), 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/USCGJ2345857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded58a73d072ecbc3950ffc3a26fb07d6d418aad61bf520c587dd3b3c4f68507. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USCGJ2345858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a591cef6e09eb4db4e8873870c8e856e569b6cac62bcb88cafa874921e69395. 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/USCGJ2345861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230f3058322152ff302b94c0a95cc8275a5dd9e69e269a301718cb42cf6d03d9. 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/USCGJ2345863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7034f104cdb103daf67e11988d91e37ca4e4c1ceec4038c8216c941e8996ee. 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/USCGJ2345864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda75c12b1e623fdeecb575d93e04d42099dd295e813b1219978ae351d7a5d329. 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/USCGJ2345866.