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 0xf224eec9358bd14fb555621f19b9d2e8025078d0a45bd49b62b19f88bd56fd43. 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/00f36302-c454-4a84-985a-dd930c9c5bf6.json and https://artists.proofprofile.net/proofs/artist/00f36302-c454-4a84-985a-dd930c9c5bf6.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 0x1e322a3d507f7084d23c1e2116e5820208f5f231d2e31bbfdca8b594f91561ff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAHQJ1811135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd84992f2322fb73f72e80193e8615581d5ad66e9e2b9e81cfa5aa1a93de566. 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/CAHQJ1848263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd556bcab491343832fb3605650e6e6cb5d304de921d61d11cb2162896cce2553. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAHQJ1906603.
Tudu (Infidèles) [feat. Jessica Loraine]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a23072e9ed9a2bbe2119c0a2003bcf9dd6076b10927639c6aa479559d1315bf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6M2017309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa2d355eba89a2b2ddf910a7ed0011edbe322ce82d120bafa6ad38b60dbb1b5. 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/QZNWY2032477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f9823eac0f0037480ea64091a401b596bcb26f416b4c9f2be93cff72536eab. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZPLR2061476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5a0428602dcefa95b3cc32cf9cf4bc286d78390d6a716201da49696bf5fe41. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA62107214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5124a3bf7c451acc219979514651824d72b477578486378d5d88d82df22c4940. 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/QZHNA2144104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd2787dea20fe8e3e0e070ce3da4bc689f4d120385132a311d76b3d98973be0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZES92274188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50c66125226af8365c2bff22b47c0b4472852c351dabb6813229699081b41fe. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:22Z), 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/QZTB42237564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894558914a2ef84a0f1e616577853cb3a59353c246e497aebd2ac985c72a269a. 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/QZFZ72306624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc4beab58d5693cc0d1fade67067d2258c7a061a49f92f0abf53936462dfbfd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:45Z), 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/QZTB72398852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0624885c1b085be537c816a31287a8e1da2e1f3cd3a03b6f7bf516f1398850. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:26Z), 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/QZFYY2451357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa22bf59ee17052de50efafb50b909d94a9cce8bb76c6f86d2b7035fe564d9bb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZDA52423954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1be90fb4ff2d345d098fd893aa34348447a5fc7331d12774335dea392476d1. 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/QZWFG2402006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6e274eec027719e90aa234952199bdd9f994845eb3b37aeaf1fbc7a6ad8ba1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYX2541405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56574421ce99c23b50a2c09ea4f384e9b73863c108eb40217d750cd7876fd8ee. 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/QZFYX2541407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa132ef7c4ec1efd488e410b0646d67bf886d7002441f9d2446d57fe27d77d8f8. 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/QZFYX2541408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463b4b5276e4fbc91d3ae965c75d926253bb14a38d695eb9de0189cc8fbe101a. 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/QZFYX2541409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd262724c399c152d2e2575ae36070054a6a2db909983eedb211f32c157c879d. 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/FR4EO2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474de629a04d1ad33388b54e236a21e674ad08263094f187a8ccc6f60a432295. 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/FR4EO2200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd262724c399c152d2e2575ae36070054a6a2db909983eedb211f32c157c879d. 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/FR4EO2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474de629a04d1ad33388b54e236a21e674ad08263094f187a8ccc6f60a432295. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4EO2200085.