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 0xffe51b641cc3e864b53af1a519cef3f795ce2b7407e1efe3a785f4c92d1ee1e8. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a642f52-1a6c-4291-8562-d9592e7f07b3.json and https://artists.proofprofile.net/proofs/artist/0a642f52-1a6c-4291-8562-d9592e7f07b3.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 0x5c387769a89e559ff68142e639a04e19072896588127b990e7db5355332536c4. 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/DEZC62295707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0b5a577e4dcb64b20e3ef95e01b247991a961642306be8cbf782769e66fb4. 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/DEZC62295709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc9b9329831a11cce375d6b54a8dfe2f64ec9e9e9f5a2ebfb916854405c9dfa. 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/DEZC62276379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37366f7ef399adfa734069731b754063967b400d88a6cf558e70f4d23516289c. 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/DEZC62498813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ef164e57a62d7b87de16e590ad5bd43dd14ca6f81fd4d6a0d6c4cbc5050d19. 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/DGA072243470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc9b9329831a11cce375d6b54a8dfe2f64ec9e9e9f5a2ebfb916854405c9dfa. 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/DEZC62276379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442eeb26d4f31259c09e53ae7821ba8c7bd74c9871314a674b8d6b38f31f0487. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEZC62113198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2191270893e61cc1399a24a18822fd8996292fac474d1dd19c6fc1f2ab2e3a2a. 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/DEZC62100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00f3fb59a72b488d02edeab8dce00f2a6e55fa553e88f1f216691373705024c. 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/DEZC62183220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d1e8784988c4a9f819e22a4413686e77a3393ea3b5e1c4a3f7e536de25393e. 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/DEZC62163553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6912eb8833f324a06a56e1e842be4722176bd12c9f89182348376e2c3ba727. 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/DELJ82047736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3511c606edabd80a6944e044e2f0c23028ec6298ac688c9ae995f494927e1645. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DELJ82035262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97b0232dfcf9f8ef6760ae3ee016d4d5d1040aaa701d03e05baf8774fd5840e. 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/DELJ82023791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1aba3401cead571446efd5373b48f02adeadcb31cb1f7afe186be688778cda. 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/DELJ82008955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3626e74ea6a2b22f7b3b675feabe9153afb9731185144c9666b93de231d7d993. 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/QM7282491755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7cfd52cb4e07d14469271994cbcaf447b290d7e6cb6c40ffc1dd0971186db2. 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/QM6MZ2410554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e994fb208041a4879209bf8ce16cc904494e01ff58de8bcdff34b22c5955b. 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/QM6P42469502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3ded6ad28e6244001d25eb57c3cd88d254ec82f72bc520b98d75665605777. 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/QM7282419540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10bd17ca31e21ce9e3439545c0ceda85dd24d81e9e89ed2300699c63c3975b3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6M2151759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6927d15775614c94919b9c221348b6aafc048207d59b2c3266ec9d98dba545. 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/QZES52140802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec04b07e8d62590af3fc358bd91cb0c5d583f52189a1fc02118d5e3499900bd. 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/DEZC62172017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc1d2ab5a5b81bbf6b238ca3008676043dfd345c1c1d940803787dfea775408. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62593114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87a75ad91e070850ab48c30c028e3b964588506df30871c48a339cb20a84abf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62586898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87a75ad91e070850ab48c30c028e3b964588506df30871c48a339cb20a84abf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62586898.