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 0xe367e3ef36f5e0f2542545631db228b911a2a8d816128d9213f9d9d25e2c19ab. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3148491-b69d-45a1-bfec-291a5e8cd87a.json and https://artists.proofprofile.net/proofs/artist/f3148491-b69d-45a1-bfec-291a5e8cd87a.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 0x755d56a4add88d844753b3c5fb0ec1a8a2f39425f5d636b3b2602c8d81e9baea. 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/NLX9G2400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f8cce93ae334b72b1823b8b69a7a8f229a7e6043a23bbbef8fb20cf91201c. 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/DGA0Q2374886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df94dc47023f61d2fe7df8762260abf7ecb3a4132a2cb351e4cd3d551988ee3. 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/QMANG2241292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aacc751278b7280c4405293f769367fcc93233008016b06c6da2a3dc42afc4. 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/QMANG2200753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ee0badd976cb0d81cb83edf12860653c4ee8a126778397b97d428029ff383. 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/QMANG2203002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef43c82f198c585102a3a8ef69794a23350b84cb3ed747cdd7b17fa16cf48e3. 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/QMANG2203004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c0b36c82af864685f44dd6213b4a9a135d0a70fd63913c755f48433cab4ccf. 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/QMANG2203001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eaa601a9937ed89a02269a230fe13858e0b87bc306536dba4dbf325dedd408. 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/QMANG2202999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87205debccc59c6a3a36a8672cf257396adf52db093b154f3385e6be5487ec5e. 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/DEH742325924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61913a2cb7e41046898591d24cd28ffa42f4d87a1fc53a60940cce2b5d53fa4d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM3DF2261851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5efa0662bc0bdaa3448f3cd9ff7b730941d8a5d6dfa62bb20c52e4b0260b83f. 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/DEZC62363375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9f8e9e3c956404d30983ec54d167fb3e7b8617328f3adbcf276ecd43992f08. 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/USANG2255266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e99882a7156e53915a7c3dab04d86127815176fda6f652b93c86076be26db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEYF12200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276f11f773098e4718408e80da416b7e347517779c57195f927b23718487247b. 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/US3DF2216449.