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 0x55cca2412d8e511ad73d6f56087522ac37bbeb654ca9d73c06eb92db0e2e808c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6bb4b14-8717-4933-9524-b9f324c1c2f0.json and https://artists.proofprofile.net/proofs/artist/b6bb4b14-8717-4933-9524-b9f324c1c2f0.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 0xba56dca7680a6db96dd776e3be0483fab536e50f730de6fc455caa56c2b404e6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJY2416445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c6d260d7fd04f031e848911e526d86a9aa903b1ce0f5ed480d4a9594c01c66. 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/QZNJZ2405677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a136c34217bc211ee18031607a407636c268e030634d1f5fb023376a156b70. 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/QZMZ92456906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cfc1bfc3417addc503db98c62be3dbd9d6aa75a993c21181d2c59094f72e7e. 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/QZNJY2447474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28714c94214cb34758b1608e25e1000c684c61c9a4aab5ff5e8f1e7f32419535. 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/QZMZ92422229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea43b9438b9748a4a2e5ebda893a3ddc79227418e3683cc0f4a25f752e786aa5. 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/QZMZ92422230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82b86c930992a61c73ca0769edd9895946e0ca04e6a748967db7d4999765810. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMZ92422231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5621c0d430cdfe8b0cdcac5ef590f593168e6cc849235363328c9b4e44e503b2. 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/QZMZ92422232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d47cabc53a20e7113b5318bbcc4c8e2c909a7b8a500772accbb114188cacb. 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/QZGLM2481439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6d86931b0216c7c71e42a41abe7be4a4edd4cc36ad7c31e3c099c140010c86. 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/QZTVM2375962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a5b708748c71171bb2b7fd3b49e21dfb27f2f342ef79f5ba8adbccdc07427. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTVM2375963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb26703e5aa8a0fd281cba975e606f061e9dc54e2d24870b376a9f1e3437f44c. 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/QZTVM2375964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249051c891dcebb737f27c95e578fbb1b2ec9aa54e23a0db1345dc45cb38c60a. 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/US7VG2542280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f80747db13668c02ef08383341d7bb85dbfafd85320feed94df0749da87276. 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/US7VG2506743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5baf161ca48e4d51a3ef6e1678d3ca8a60f831de688a73f569328d788cfbbf. 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/QZW9M2450725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead9de1ac71a112c2fc8fdd65ec7534c8f9102143a9f3bbe9c778b2783448e61. 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/QZW9L2438566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2eadceeec8fea90f8ef9fcf493c64f2aa189bd91233fb5fe91ede4f6fe498da. 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/QZW9L2405281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd6f94bf242ff5f5c9064faa1f56eb17599e137f3133dd2fa2c2c287c07a9b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9K2445427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73c8e3cb86891e3214344ebebc25a1904a1d600669dd4c4437aa85ff5d0f017. 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/QZTVM2416395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7795606f40b097537faef05a8cc80a530bc547bc934d304c7895d89ecda728. 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/US7VG2506781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ab4009bf059bd7b64cf0fd59bc7d81449b61ae58a105350e097117062f5b71. 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/US7VG2506782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823b6e2b4f94b132013de9fc3135a1b12ab6d7336bc5c2ed009ccf5f0d62516. 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/US7VG2506783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa7e5a97048ce5c2f94a830da7f91f665b3cadc354fdb3fe3a646d6c1c0924d. 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/US7VG2506784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6e8b93aa723c459d2e55f3ab5573ae8d462a77aad663b21165d12dd5e706e1. 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/US7VG2506785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f3433eac8a197a31326442801a7df50607e00d5b3d1e057ebba9040a2bd0dd. 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/US7VG2506786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930270d5b85cdb707085e1ccd8d91428781fe620b507d6d0bebacbd0e3d46e65. 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/US7VG2506788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d3b31e5453a2637c312670faea02aa493abdec12d4bae0002ddf9ece9574e. 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/US7VG2506789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b307b746335a005f2505440a144150a03a41600c41d30bcd1344ddd93ae743. 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/US7VG2506790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f755e04ba10e637c55581b5f8c7c2cd2ea4e51d88da94337dfae546333c7b7. 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/QZGLM2550447.