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 0xb9d3451cce3b6fe94cbc8d64593476a43e910740acaf1e10e890d8391ac7c03c. 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/7f35b830-a317-40f5-a11a-9e5f90159ffa.json and https://artists.proofprofile.net/proofs/artist/7f35b830-a317-40f5-a11a-9e5f90159ffa.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 0xd905569c39bde220ae25bb3ca8af1749eb03d79108939a866aefa5c7be20a6a5. 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/QM3DF2247707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc83ac8650dde2517e141c9ba4c9c9c627f59a0878959eba150e9dc4087ef601. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM3DF2263806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5828ab7a20e7963c2596c06e7db0e4c08b3dfb62b39a64ef00313abaadea67. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM3DF2263818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f6ade0f63bc5eed061c47d0d5bec78182a7b965aa09cbd0408467be6c4a6d4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3DF2294276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3f2c5f63c918e11d24c470b63c4a009d96ba54949cef93bcdc1167c6b72d4e. 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/QM3DF2294277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f3c630b3c0c1ccd1f7c8108f0579614602173ca821f2480b198d3568f12315. 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/QMANG2255797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084afd0b845d850b7117668c7f8e66347e9fed66e9d62cf877777976f884343e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:39Z), 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/US3DF2407343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa415553f31b31ebd1d8451b82c8fbeb480137034c299a5908ee2ef757aa09b92. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:49Z), 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/US3DF2407344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe0cea2eee613903cfbd8380a0682507f0d89b40de827b527bd06ce14a18cf2. 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/US3DF2407345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900f78f1dea88fcbf538711ab8e3487bdff27db1a33085980df24efb7fd02de4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US3DF2407346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085cc7bba7c06537b1088b6a473f8dc2c9c1a8330ea6ccac367f340243876158. 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/US3DF2407347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562296f1fd15fbdb1fa891af8d3b4f32dc64bbeca5c24377202bce54bd232680. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/US3DF2407348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fab13a8e257fc51f44d244ca47a7a7e51377a0d4ac9042717396a05aa5ea77. 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/US3DF2407349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4059a1870e6a4cb413b47face9b3b9e5314efa998e79733d6b0d26be0e3001a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US3DF2407350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171faf385d8f64c92a21bd1c1c42886a49f46a3ee14a8fa9bdf18350c9acb837. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US3DF2407351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f0d38fec84c6f549a9f90ed2ea5598dfe58a5d984f583db0d338f90f14bbeb. 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/US3DF2426413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533291d6467a960526ebeb50f24a11eb719562f25b4fb4fad318b47674539d4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US3DF2426414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e30254810bd0beb01799b8340fcdfd431ffe1a49098134ed375d9b449f2a90. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/US3DF2426415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813c0a999e364f7ab87771591cb10b65d0647b57ce63de5b186f677560cbabce. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US3DF2450871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd111a7d7191a2becbda8a4880fea7808eac78348af185557fb0ef76cede8b128. 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/US3DF2450872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c36bf3338a08b29ad5a426a7c2d59e93bd79e0a97b53b35deb6c218e8c5e2b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US3DF2450873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7c5a5f902cc190e047c3748b754b9e61c3b009a4ac2f1930a41411249e6351. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:30Z), 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/US3DF2450874.