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 0xf72784d54fc0d435e430de4aae8a5c7a61a51e173c5ab17b081258006bdc8d13. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b05605ea-d43b-4fd3-9fb2-b752376cd43f.json and https://artists.proofprofile.net/proofs/artist/b05605ea-d43b-4fd3-9fb2-b752376cd43f.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 0xa63e89945e3ddde610894af4e3770130ab134892cbaa673879ff0e6ec664d2e0. 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/USHM21572450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fd360b160b5655580d14a2e94d63b2aa975190886cdbeecd9e3d2eaebe7413. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USHM21572453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e2d07b0025c04ddffe9887981f3c69f23466a5e46a5b8970db762fb15cf8d7. 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/USCGJ2301724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e54cad941757341b7fdb30856818e7cd55b6dfed89adea7224f9973c0772e1. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USCGJ2301725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9940b7e821f025d11fbe1dce3d030800bba860f7abedd0d0f9a13a7a77afa50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ2301726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020d37a8ab245b2c8bc2e6e9c3950cc511413a013be26fcb251c75f14d934b0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USCGJ2301727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde7067f58974186026c083bcf4c61b1e2a97e14ae93a7ef11ef685807e98e76. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZZ792426695.
Days of Our Past (Live from Wild Horse Studio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8dc6a6aa44a95344350ff78e4548bd3c44df1e1ca7102170624b23fcbbc8b0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:04:09Z), 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/TCAJF2519100.
Chasing Your Ghost (Live from Wild Horse Studio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0321411127ae0ea8dba0f7fef0e2ffa95d44aadb943fec8cafe417fc063aa9c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAJF2519200.
Corpus Christi Bay (Live from Wild Horse Studio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f461e29a97a0a7c45a61881977d4973978d3c938f299ccffc7b7f119bb44187. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:06:13Z), 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/TCAJF2519240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0157ecc715e82f2b69bb1e0fa5fce4cd96b7d87b8142b3e611bafe7192d7fd26. 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/TCAJG2547917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba20df689475afed331d386213773bf8fb4a3b4bf519e41c20ff4df2ae56feb5. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/TCAII2473742.