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 0x4f84f9007dbabb822914b3e7d3fdb3aaae0b820d30df8f68ece51f8d78357b1f. 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/56b7253c-c6de-4660-9626-1365ef90f6d1.json and https://artists.proofprofile.net/proofs/artist/56b7253c-c6de-4660-9626-1365ef90f6d1.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 0xa01c1d2d3d39805bc969ec37268de31d7de67fc09cf297ad4e95e35e6ee39d56. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARBF32000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1113aaace8880986f60b747e0ebbf250878674e8391a6128e0cabb6f258e13f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARBF32000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8655021ab9fc74006d86479b2e70443b6799c77c9d342d18f919300e5ee863. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:28Z), 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/ARBF32000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c1d2d3d39805bc969ec37268de31d7de67fc09cf297ad4e95e35e6ee39d56. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARBF32000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1113aaace8880986f60b747e0ebbf250878674e8391a6128e0cabb6f258e13f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARBF32000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8655021ab9fc74006d86479b2e70443b6799c77c9d342d18f919300e5ee863. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ARBF32000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db80aea8afbdb7fc7ca494a67932099da118f74a81c83a8eefbaf1ecfc68314. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNJW2029315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae497d6be1e7d2430f21e8972614770acb05b0d8bffa5329ecf230f92ac1dd1. 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/ARDL12300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca977326df9ffbfd3df04159f9101a2947d346ffecaf8ce406a4150e166171. 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/ARDL12300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b97a87d80195affa4782db21779c7caf73b406391731a68b5ab31a670eb5332. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARDL12300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf574608171d030fe3abc740dde8521ee5f4017c4d07349a8d8cc22de294e3. 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/ARDL12300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1de21e88ac6847d43542aa895494476d8df990b425b3886483147b197b707c. 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/ARDL12300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266657a57bd19e83ab9acdd771a4894f4dbd4a57e238339d4790492df127ab3b. 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/ARDL12300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5117d1ba545cf0ad33fd7848adb4a786079c6b41dcbc7b17a11d73319db885. 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/ARDL12300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6663c5a0e5c1d30ce5eac55091e56927f6f075d18f3801343e8827bf74f0ea7f. 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/ARDL12300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63acc2dd6dbdebe32c9f19c65248ef992209eb516e93556438d8c0ae55a44c2. 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/ARDL12300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b1081849606b9443f49acc6df0237a34a630904bd84db0fa18f863c71ec1fb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ARDL12500022.