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 0xfc6d5b5be77d465248e003f325e9c29413739f03ed8c3e70b6e268c795b9deca. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/188ed96f-b2d7-4ac6-9a12-dbea4fb2ab31.json and https://artists.proofprofile.net/proofs/artist/188ed96f-b2d7-4ac6-9a12-dbea4fb2ab31.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 0xbd6de0843d1fafe46560dcfaff390aeaa478808975597035f05062a402766fc1. 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/USL4Q2441788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e83dba5f82b61a4daf9636d5a6120198b7fed28976c9335710741dbe4da8f12. 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/USL4Q2441789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1503921c892eb481a6547f7388cd809625c0ffdbf00821ea7932b070176aa9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USL4Q2441791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e444a46ba1f407193839011d929cd044f30a733a3f62630233280f5236cb2f0. 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/USL4Q2441793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb39a4d3c1970e72932cbb85e76788c0aa53d9a3a77273a204431721ff612c6. 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/QZHN71990180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb190287b9e916bf6066dea9e5a51be1f08b7fe73635e5c3d79c86e7bc468c. 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/QZHN71990181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8442c27ed3adb7554b936a268cb466df0d7d0b76dfa02c291797f7a0ad69e135. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHN71990183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443499fd3af41b38209d5e98df87e9e9bcc344c46d886de213bc8d70be217740. 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/QZHN71990184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87d47b6207a7180d84bc795848a957d43eef47760d18e1bfe03949a4921a0f0. 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/QZHN71990185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b05f7cc1a2876f55991e0d5915ae99ea898a4c09afa416d3972cbc73b7e869b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6P2465119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6797fe889b69d2902e47f06f11c74547b6b58203d912dddd617fcbc202bfd. 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/QZK6P2438688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c12331c672d93242752fba3780b8338d5da139b3f4d463c31a60f71bcbc5d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6P2465121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6797fe889b69d2902e47f06f11c74547b6b58203d912dddd617fcbc202bfd. 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/QZK6P2438688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6648dafc07adfc15f70f2417376f52b61b2524b653026885a429bd2b4f2029. 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/QZES92321308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3a6e13ea9d8cf8b97d12e4972fa047211a01e829f4b52dc5e4fa5fbb51d3f3. 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/QZES92322988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab049b846cd54e0194b36f92a0686b2c1e36099f94fdc420d97fb72ebf6858. 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/QZES92320611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6648dafc07adfc15f70f2417376f52b61b2524b653026885a429bd2b4f2029. 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/QZES92321308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab049b846cd54e0194b36f92a0686b2c1e36099f94fdc420d97fb72ebf6858. 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/QZES92320611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d100f32be26c27c8443d5d514a819686f3095d50ccfee736df0f90fd66d57. 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/QZNWU2166950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87455a7ab309f80d9f64092c865bd5dd9543ed6ccd69b1f2bc76ef51b0af40c1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN71998896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5046aa3cee1cb24026b09dad03df92132dafb3793497469c3e93c57d00abda4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN61991272.