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 0xd84bbbda9cded0eddd562c7b9e38416b63fd0f2c145cddd461748b6712d623a6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a56394c9-5f62-4a02-a32d-38e35de2f1b7.json and https://artists.proofprofile.net/proofs/artist/a56394c9-5f62-4a02-a32d-38e35de2f1b7.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 0xf5d076ca4fa8e2b88522ecff4f84879d577b72dc7ebe89c358005ab793805a4f. 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/USCGH1750618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d5759dbda351896191ba6b60ddd896fad31586d70645082b23fd6ebe7fdd87. 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/USCGH1750620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0987fb0f315d3acd227986d9365bcd301f5f316488c88e32fca3e4e58c7bb76d. 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/USCGH1750625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b18cb7349faaaa02eb0aac5df667d98b65d6ae44797e2d39a8261ea928116. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USCGH1750617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d076ca4fa8e2b88522ecff4f84879d577b72dc7ebe89c358005ab793805a4f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH1750618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0987fb0f315d3acd227986d9365bcd301f5f316488c88e32fca3e4e58c7bb76d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGH1750625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cc75f19383f4a023aa755939a914fd27f42ae347d92e00c168a2c54b74d2d3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM81928211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cc75f19383f4a023aa755939a914fd27f42ae347d92e00c168a2c54b74d2d3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USHM81928211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd4653e839720ed3473bfd8eb31524cc479043878df20bd0170a5e9022b7ca9. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:14:34Z), 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/USCGH2072487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a26bcee2a550748db382111ca0728e3d9f0607d86f1892be321e77dfcd018e. 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/QZDA62202105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0c846d639d112d954078a98a7351b0efcb6399aa27e3026c634beb4f1c600. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN92398376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef73347dc1808257668a7218f173192371845c28474df9e8cc4afb03d612623. 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/QZTAX2324394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044508044609e3c19d80553b65d5590ae5ee13848093891e88a2c2e5760d8a47. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFG2476394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cca1c61907a8e8cb0674f06da9ded0be0fc4dbdb92d1bb06bbfe611b38001f. 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/QZDA72572133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5223adb473f89a55b9f3383e55fb228c40aa9fbd98627f73b9f863fcbfb00a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:15Z), 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/QZWDW2543956.