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 0x352e61be6ff3bb1d684a0df5bb09411ea86fbf620a0f898a1c5feb9d4db7b660. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cee1def-1624-4057-9f95-adf26920f405.json and https://artists.proofprofile.net/proofs/artist/3cee1def-1624-4057-9f95-adf26920f405.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 0xb696a5bcf787dfb70c084d4b50b87505dba7bf777047356a2d5149f4c0754385. 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/PLF242209892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc8e70adf278c4d65d1a39e16334bd778c3c84f048205543e553c6f919fd29. 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/PLF242209809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6403cd1b19474e935b194e084a442dc4b938966ee416558d80720a7b79721. 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/PLF242209888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134edc28c272d61aa0d4a49ee236d89dfbe3b45c35d57a4f05deffe47d95170a. 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/PLF242209889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ae033552e0493efc9a4c4caaf0cc8febbef91e821260f3ba7590980431375. 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/PLF242209890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46700c0181322a855ce51d920d782988fae7bd182dff42b59fd402bf17147918. 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/PLF242209883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c2b9d420bb2b2c7b104b69f6169ae58bb25a49473e40f3ed69122aa1e7accc. 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/PLF242209891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e71ac8a3ae61400c272405a32bf36ed5acdc81705e9a9918eb27fc39cff5220. 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/PLF242209864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb696a5bcf787dfb70c084d4b50b87505dba7bf777047356a2d5149f4c0754385. 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/PLF242209892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27c9fda493a9227084dc7910fa674485948991cdbcf69e97e0bf66171c0f26. 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/PLF242209800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d1e182538b3bc89cb4ebb7b0febe849416de7ae887acf5afcc0ca810dc632. 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/PLF242209893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f5c589cf2412cc130dd7214c76b6926ea5ed74bdf157e42d99b38ef896f95. 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/PLF242209894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9fd67bf16de63a55c8de8bd22c20b00c92f746a9a9de88ab4a4c73a67139c8. 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/PLF242209895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f771b30afb5964fc358067a2e2b11baf3b83fd59a7d21ce9734b046fcb1422d. 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/PLF242209896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d973f0559e927eeb958b8b6534f5195e307af0f13013a38191d3b3b21ac4a46. 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/PLF242209897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd666f5d5d2f407888733e82f1dec87d9a656ae930fa05e3a1d71e558457c2f94. 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/PLF242209898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1368678021774954fdf45dff1ea6f95ea3d72ea117e1f8fa4b14a97c7a85b84. 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/PLF242210505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b707716a4ceec17d774cd22101a9096b740863b5c711566776fc04b6c4fa8b7. 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/PLF242210385.