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 0x11070ca90b04b186d113ee36b45939be2b3b624361de2946940f7456da1aa7ed. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/764e933a-92c9-469f-bfde-5c63284f5a31.json and https://artists.proofprofile.net/proofs/artist/764e933a-92c9-469f-bfde-5c63284f5a31.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 0x9fbfd92b15f21511296bd9456d408ffb4f5751ab33062ea6da607038386c7d2c. 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/JPA969590094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca36fa50131553de30a7c44582d6cf9a8dc9afdb329401c5e46790840a8cc0. 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/JPA969590095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b148b0a8f0b958ec862591e9052b04175cdf9677445bc32874c4c01f3ece4b. 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/JPA969590097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38745e139882e480bf339ca4380f072760767c34f377b759979c05403d4fb2. 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/JPA969590106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fad170a5667472736c52c14d33acaca514968c5140f3c1e1ef4a7b6d2164522. 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/JPA960590109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc592524cecf03b980abf97b7a5f7ae1e35f0b5e4ac15a75835c8389bd9dac6d7. 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/JPA960700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485dabf2942c71bba742ec59677c54d8bb06341f2cd5128ef5aa25fb434197f. 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/JPA960700214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec348a5e15b138574f09a751e9500b859a88e3cc4b71a2f3eec72134832e548. 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/JPA960700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef05698cf09d5c95852ca1835ea8b1304020347e9ea5fceacf6db06ca1e57d34. 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/JPA960700222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d80bcb4b3fba0164f2e594f31a0849743062d75134bff1759e2accc3d80cb. 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/JPA960590924.