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 0x3135874517775d0507660dd5c697f5504d67d8fa6ce7e38129a00b7ebac374eb. 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/7f3554f5-24f2-4580-a013-017e642adba1.json and https://artists.proofprofile.net/proofs/artist/7f3554f5-24f2-4580-a013-017e642adba1.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 0xb6b6f2d62ca8560f801d39a328034d633de9b2ec3de1cb1cea5809aa78906f93. 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/QZFYZ2456390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1ce91d1416ceccb9e7d2c3c1077ca83a4eee84293e6944fff8a76d5e5c3abb. 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/QZFYZ2456393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf13842d73e0e063971b5037ac9043280d4fa4b9c70c23a431f9ecc87906c02. 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/QZSYP2397186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25081090dd224192efbca59fd91f6e021ec42dc266fb4d7e38341e592f6b9d4d. 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/QZWFG2361076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef9bae00c71c6c9e1cfe69c51ab33c686068618c190d0dca3f3af3723d12a73. 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/QZNWS2348123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa175c07764f5f69fff65cad8a59eea8cf0dafe254b0bd5d2a85f49ff6373f564. 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/TCACK1599435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa340e2f13a453360ae3937b4dfbc8fbe29dfa79dc4acfe1debd7ae928c678351. 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/QZMEQ2338792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294076e25a24f4134fe1b09136769ffbeef6c2150c6062ae4d69750ecc59b48c. 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/QZHN82378434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6faa27c7bf68b07791c0295e91d4f15e40906f02283f5c38fb6869d16de27c. 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/QZTB42222520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8b78094736c726ee54be2f78e550a8c66d31003e179e38c013415b2964adb. 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/QZTAY2207692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968869d3d86eaf8ee564feccda506d7b48527dd65c225764ee630461ba3f0aec. 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/QZTAS2239949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5fa467991aba2ec534c668c4e41cab68b49c35f33959a59474262a3dcd4cd6. 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/QZNWX2203577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bda9dbf5b28c8507311fc045aa862e4ecca3d42b3e81d761f129fddc89356c. 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/QZNWU2216916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f2c1cb3994b3525f5dc3edc3bd5d95d4e693adc373e2ed88c289aad9f66e4a. 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/QZNWT2008977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c378c6159d8ec5920fd2b929358be5fa4e161fa94b6f9e527f36b3ccbff4d92. 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/QZNWT2008979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a5bf304aed0a7b0b8cade3fad1768131ded7cb5f4b5dd1294bbe342c3516b7. 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/QZNWT2008980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcad341afb83620df735eb6c771e92da6d639413bd4d13c308ac38992544b9f9. 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/QZNWT2008981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d43a134d02be92c007daa3111d5b814fa2c56276cd9d4d96b24fa413ad8dc80. 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/QZNWT2008983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc889a3f8c641a6b9cc2c56fe4fdb27682d521615733d866052ee300a2d33b. 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/QZDA52010276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89181239ed6c5422a1a3d484efaeb4abbe3360f434a89f128da999d419180860. 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/QZK6H2441659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad2a9dd3599843fb561275357a290ff4a24be3e2ff9f83e19301afc748543a3. 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/QZK6H2441660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9525e3ff1bc82e02fc82e71e2abb885f2e07aa6416c65a43903b87e76c00d0b. 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/QZK6H2441661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894239c3b1b0dbf110e7493bebcc91e8c244376c0b92485a62e08504693724fa. 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/QZK6H2441662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ab30ee8e478d3f0bab9971dd2c0696af8dcdae1ed32ca46a41d6859f42fbf1. 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/QZK6H2441663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d276a481992b22b13c4b628a80e6ab6022d6c2f86d0530cac321093119b0dd3. 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/QZK6H2441664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd13a28f643249e3c898475078ac59b5b75d0760adc56965a5dd44b3af86d329. 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/QZK6H2441666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3eceb6a73edc8128f9dd412a009e82f2b1b2a87bdbde7ea9dd94ddd7d3f1be. 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/QZK6H2441667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa175c07764f5f69fff65cad8a59eea8cf0dafe254b0bd5d2a85f49ff6373f564. 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/TCACK1599435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc3060da94f92e8f988e995c82d8c866aae73d98669829ccdd8a07604e0b54. 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/QZMER2581252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7325f26f741cdadd0d3b671970a586ba7349d406112b3946d5bcc4ccd7e964b6. 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/QZHN72552650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3317ddd0d810c58c973a5c636ff8e9541efb70e12b4bd8f08718b701d1b9b2. 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/QT3F42406688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67203671fb67cf06c5e638d8e00726f01c0035cc1b213bee6da5a53120e2fae. 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/QZZ7X2400594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1b8ba68fc313038d05e133f648931b74ee5fc2c4252c3298a1496695bbc6a. 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/QZTBE2482963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedc4ef4ab64e4fc42482a36178d0e83c91f23749bc9b56df25adc799d151711. 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/QZTBE2482964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbb0d93a3910ede7c102bd5501477241ea080e64d049fa21b30c411b8abd144. 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/QZTBE2482965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0e9e648f3ef9d46ea05a2924b0f3b8cc4d71524ef06f4b89b8333e54a55f65. 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/QZTBE2482966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5fa467991aba2ec534c668c4e41cab68b49c35f33959a59474262a3dcd4cd6. 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/QZNWX2203577.