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 0x54341ea9344b51cf2717aff06d3e87ac4925793e90f542c8da24c84ada19e32e. 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/3e91a43e-f5f8-411d-ae0f-bec075f6b324.json and https://artists.proofprofile.net/proofs/artist/3e91a43e-f5f8-411d-ae0f-bec075f6b324.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 0x92f47c8f0375609f24c01b8cae93cd00717545b13afd10d008fa4117e6d5a023. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIX2430923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a6c9760180c194bb7d49ad8a1e5681f3bc7dd62db0f488f8141416b5e90d6c. 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/TCAIX2430873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef20c5c32e73548007710a024f477fcaf3e01ec624b32d74bac20622e3960f3. 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/TCAIZ2468730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50e19f9729ed35c735a851f89ff01ef4d73d79f6669a1515e21acc64491909. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAIZ2468740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f9e4323fc644afa4051c5a06bd092e7310e53ffba59f977139606da6c15761. 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/TCAIZ2468745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd58cd03332ca3188e148e77fbcae0a991e21e934c2c056249f9fe082da9ed62. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:54Z), 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/TCAIZ2468751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee16be15b109a05710fe5295f5a7f7bc9ce4ffc3cae7805bb76e5b9f7eb375. 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/TCAIZ2468761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd96a7ab6c299b36f5fc05fa2f927d0b306fe5632a83c99a50b2ba893e77fd. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAIZ2468762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70290db0b2dddf74d2fcab379a1f1fb74a66717156e0d236337b9e298b6b1d78. 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/TCAIZ2468765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509114283e8afa6dd5ff9d272cfffc6ddd60d551e91f0ce03292112817f31f35. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:12Z), 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/TCAIZ2468423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b27b1803c5f7e46535f6f7c71cd6678336ecee000052141474060f53d0fcf0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIZ2468364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafac503c2faa217c0949ea81aa074c95a37c81f78d6ee08308b26daad99f1e6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJA2468441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450da1793ed393c5f58a0865928ad7746a585ca0934b4aa68a4d57d20db18d6c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:11Z), 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/TCAIZ2468402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb489f223c2bc956672f221ea92caaa723849d4e624b2adc9be3a120ff1dd44d7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:46Z), 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/TCAJB2468975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19e6dd1b01f8c99c230cfd25e214805f68255c3f6a4d8d76dd0b81ce33ae1e6. 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/TCAIZ2468499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bedb909efb88d0cc0780e6f06bfc1cac9228d02de9e94cc76baf8f7654e748. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAIZ2468507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d4fa5a4d925437651105fc9a4e443f506ed1cbc966e2a9d8394bcebcf46afa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAIZ2468510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576f9b5bd7f124723b53a33c85a607d94b05c5b013d74ecf404b7f8adad527fb. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAIZ2468514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a67aff17244993f56806fbf76fdc731a09f97435c5e928cdff2176bab51bec8. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCAJA2468518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9954649ae9f5e9671b170bc021300a33314e89b388f1aa4e9bfe9e3aa96b851. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/TCAIZ2468524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7807bcdaa463b842759f4bff8d3667de427c190ddca1e1bc89bced6219e60. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIZ2468526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca70f73a5d0a7712e00c3e335a0a4987287c0788afcf3e49cfc43df3bcb6763. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAIZ2469031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee7336d1a31f6c006e0a01691cfc8b1a55c4f7b191f48db5005e98fd4250b88. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIZ2468342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072b31d9a010d8fe9d8fe5fd44e23b632167b78842ea3b2b13457c1d47c6e110. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAIZ2468907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22faab8f51a66f41dc460209accce2276b74a40c8ea6b2bbdb0b083e390830e4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAIZ2468910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b68d5df8fa9643e2491cae00837f6a740515ddab838199fd6a33a0f34b81b62. 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/TCAIZ2468915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f164b0b9a470dd36ed1787ac8af1d068259c2178240b288a0a8b7afdf1b7d9. 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/TCAIZ2468920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd67d1196df46c025c2f185921342500d5500d8a09a7f32952abb242ede4b98b. 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/TCAJA2469049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7541e70ebaf8b8b7719660ecef7a3b30b4119c27b2a734e4275e3bce7b742006. 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/TCAIZ2468584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc416de23be506cd730548bf7d59ef5f06f934646feb63310f6eed7f8bbfb60ed. 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/TCAIZ2468590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969ee03a2646b941fa71b9910faac0970ce11dc569a88deccdfaf1450d9bb867. 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/TCAIZ2468591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bab9b2675914810f21af1736ccf3f2f0b25fa569aea579e4769736680c81033. 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/TCAIZ2468595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4f225f8e4f1a61290bce4f9dbca105911139eaf1c22a311bf5570e132136da. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:23:18Z), 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/TCAIZ2468597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6adb264c32734a27c592ab97be0fad486ce5f3d93ea0da8ba2f90fabd8e512. 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/TCAIZ2468601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24be4625c607152e158e1e7a099ba3e4d9773f72b6df964df283ec75ab03cda. 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/TCAIZ2468605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764a3dcd42b42515b8cdaf31941d6ddc696c32ab88a5236c9a6929ec3dfbe4e4. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TCAIZ2473328.