1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x373bc675167d9d744c82c26d14499e4aca491097d19463913efa1ab5b69316f5. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c9ed5f6-c445-4718-aac4-b3d2f560309e.json and https://artists.proofprofile.net/proofs/artist/2c9ed5f6-c445-4718-aac4-b3d2f560309e.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 → block OTSBitcoinBlock must exist at that height 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 0xf878d3ec85c2acf844d75271c4c85cc113eada24f012047a37a30459468c098c. 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/DECW61300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3296267afd13428c8166650eaf6d364087ffd183cad72dc1c06c2d0ae7204b1a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DECW61300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d2088e76442242c02304da5b7178e477663bd593d93838a1dee520319622a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DESW72400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9676ba1399fb4959155a0843e8356f9faf8fda2b7268bda1c3f07363e2bc9d1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DESW72400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcbc0da0cb16ef723a9e6ae69f2700d5fea7536f118f139336aaac587f7a7f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DESW72400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecb8a205879b346af21c5efe44932bf683bb6601104982d5aa8afb858026eff. 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/DESW72400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215232bd5b4ab8687c350b9253e0a201634f0096b5825878b256b04cff630e1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DESW72400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde9cf0b79e1fcfa580603d34665b88f5f41b7bed9ec3e51b747687baa0eee3. 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/DESW72400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd95cbb6718bb6d42c461fad8502a43c6b5e36ea242c5bc46d0b4536357acfb0. 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/DESW72400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99f37e24625e9048e101c96abd7cd580ed5511147dfb90033b1832cc300ecbe. 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/DESW72400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383502a656dded397ac6100ae0265d85b91e090f549bdd8fd948d3b0ca73ab1a. 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/DESW72400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9698ad5b8d4d7459844b75599a50ee3de1da348c37c85fa27550e1cf5febd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DESW72400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5663357a37930ac5a6cfc0bfbd8790bd429cca1787bee1c8695da0d644fb8a5b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DESW72400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7050900058836a792a995138f7ce2c108f5a5505361ddff5b185528b664c4b. 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/DESW72400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad220fb0e1258bff3e225d20acc31aa0661448590a519edbd36f202b559c7a7. 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/DESW72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d08fbfdd2e61806bc06c42b2036f3838b41bfe5c6bb2a52a793df8df86df30. 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/DESW72400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe667816a9907ccec4662db049743aefd551587564531111b61c46e7b22da48a7. 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/DESW72400032.