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 0xa77dd144542a128f3a2fabee9fed70c39bf9b46fc1d48ef8dd5aaf6ea03b9529. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91ed7296-3c56-44a8-9e75-10d592283fba.json and https://artists.proofprofile.net/proofs/artist/91ed7296-3c56-44a8-9e75-10d592283fba.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 0x335731f5c11f6c62cb9e5f6b8d66dc274b0268b60b544d0afb2310595e7ed18c. 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/ES71G1767037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1721ef12b2cb4bcb500de8deb7e3606526ae3a464612f1a9429412fdeb8944. 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/ES71G1763597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a83d431d5e4510f68ef4655027d37f5ed61d1f07e4890b6411f90bb73ff4dc. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBLFP2372124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1965f67141cfddfa09c4d4e1a78d0fba7ceaff938294c7e066dff69dc40f49. 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/ESA092409353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48c131164761dbf9398509fc18a79d3eb6cfe520a86bfe2b05db672269061e9. 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/ESA092335568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3339b34b790ad731202a66c86bd3bb1810fe8297068bf7dc35e85211bfef62. 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/ES71G2223929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa198cea595aae04a426ddb1647454edad259c1662701eff6af5ee3a36fc6f3. 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/ESA092508107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c17c3932f900863df2e9aa7b679c1c63c91acc42caae804a640ada0e7ffd295. 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/ESA092415393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ba389b6cb24b2789c9c10831b7f9769f54107ebc02d501eb08da0d3d6824d1. 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/ESA092508554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea607e9dd63656f0f3f22c43e368d5fb32dcf8d3eab6bf28fbbd90748dd1b407. 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/ESA092507618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831618fc6975930b221d85767170f0909fbb86f5d6b161cfb8c9cea269b97795. 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/ESA092508557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa78b88e2707a717d15a154954bf64a183941f96009361f12acae956651d829. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESA092508559.