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 0x43229fb61e5ebe432d819edeece326e8a6ffc92f42279c50c6a0133e03f5b110. 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/dcd66e4c-49bc-47e7-a61f-c8d8407c92c0.json and https://artists.proofprofile.net/proofs/artist/dcd66e4c-49bc-47e7-a61f-c8d8407c92c0.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 0xda64ff4d05a4b1461ef19e79e054d2c1ad7e2579710c18d4982705a17d0fbe45. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1875310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd815addfc68671b8d9d6d39d0606291a0efd6dae93243ad1d1a0f35cfeb301a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1875313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ec067da33cbaa79e54bb20d5963b0af7357ff9747611716f5ab0cf7b87e1df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADO1875318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3dff9871a98c51b729c0eb7d5699c52083c6f24726fa0f3ff6c231614237d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADO1875320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2b0febccbcd70e3bd1debfd4d6c38b2b0bad70f0f7bc3f33a7ced60aeb8aa5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADO1875329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fbe9a0164a73fc50ff605574fcfc321aaa955105bfa320d4b329b9f3664496. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1875335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25176b44c646edc7fe686dcbcc8a1e2be9154d395ae83208082feef41b0e55b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1875338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c055dd1515e11be0da66fd0a514b96dc4323be4994b07d0e7046205b630b7c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1875340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d47d92c212d51e075dce9d4ea47b812b8cfd8e8975d0501e991ed2cdd42c4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADO1875354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566c98d8481b58c17822c6fb92a18e3e61eb4716af93b3b22d3e5e58b69689b1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADO1875381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e60d1d265a56fdd54ef17c180f0f7fe1e2b47a8df5a69313ec59c5f66882636. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADO1875383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da71fc90d8377b7917852ada1e4080dd7e7e003d64ef2d0a65cf402182c7d94. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADO1875387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0f5f0bec9389b6b3e35fc36681807ef1559ee7d5ac917f1d6731634d0cb5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ67M2099996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e2f21259574298df47bed047cfbc1eef195aa047744f38d29c9d05d9d2a471. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADO1872006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef94c0d095c11c4feab99f690a65e84fda3848b1c23c43dc527bea8bcff65416. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1872009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9643d62a3e7253885b5b450a1f6dbfd82d384c8534931c306ef787168d296. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADO1872012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e6b890fb0f5db6cae367d444cfc67ceb4454029ac4136ffbe678bcf4deaaa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1872015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fc0e1ff121c856b9206032521371b192dc381e7a491dea8c6fd4ecb073c01b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1872019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ae6bb597d2d1c63cc26311fd02e8a7c5e8638fc09a60737c52a17d1671876b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1872024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60214549f70678edfd5e9e90f282a28a1cfe3707e9eff93147af79a8570cc3cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1872029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaad873bf0d265fff4dccc161d12a1886937ad9749e16e1fa4d9011701e3258d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1872034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37311145433b5ef9e3e295e567c7b387ad6d35ee2a85a6f7d15a741ea177b66. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADO1872035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc3097cdb511a2462e5a07a45ce1936b3576eb073d399b9c121513a02d1b3a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1872039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf5ad2d35517bce8ba469b86811fea63d7677cf82f4bf24ef68db3abaab8687. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADO1872052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780ffc39a7db700eb965632cefe653ce9a947a094e47a84db58cb208aeaef2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1872076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8afe71b09e751517d5e1258b7709ddc07c9f5bae9c94e4cf2e81c6dec9c5bd7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADO1872072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd637c8f7ef3e5a117139fcdb262026f1267aced77149eda273f0b56f498c9939. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADO1872085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b6276a6d9fdf8f29f2ef4fb9e9b5f6e2b1f08b9e0f0b1c1ed0eeb8d6371a6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2077069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9726e080a145e675bf53cf1a332c77cecf41ea91cdd4d06e4412bf25010946. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL2151244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f5f5206cd90b3c4e9d1b8ba0d04ea723efe6ef6f1caed7cc0e909704d307f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2089704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf78c49667e1010751f363482d77dfd486573af8f4f3f4467cc50dee5fc579. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADI1784058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8426c968f58279ae047818247109632bf8f0c8d71b550dff7d5e5cc428a3c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1133933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baf6ad73ab2df33b3eb29e5d7392a34dfb3a172e94ec75819e03ea12483bb13. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACP1619562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09642348c8bde1f2965bade4eb1d52289e59446d98e255dc5dcc5e9f13a39ab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUG12002948.