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 0x6a06538eabb600dd5045b978a46401f316b8353955ec9f563ff73ef7cc8b1e05. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59cdae21-f367-46b7-a4f6-9c768d43aa53.json and https://artists.proofprofile.net/proofs/artist/59cdae21-f367-46b7-a4f6-9c768d43aa53.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 0xafcbc873edd1220aca5092e9e2c898216821cc04626ff71982716fcb0c716a32. 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/BCVP52300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615b434cf45a1b8340eb17bc3de1ac93cb5fd4cf3b67865fbf556adbeffe27f1. 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/BCVP52300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cab2d7c1733622e897864f17635595394c6c3192dae28f09b892db2846738b. 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/BXUWJ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016df2a42550b1c2856a198a4ab918007260415a7a799235cb0c2576152f7e8c. 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/BCXTT2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1814c2de40e46685eb7941529a031dc0dea6718bcb673604de38574d7d933aa8. 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/BCXTT2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33a5afd45dd5eb8b14696288b669c66e59e507c557be948831c7623ac878648. 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/BCXTT2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ceccbdf200d480b5cae369d1f5f2b6f1c83aa0d06be6fe92e17da1df99fa1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCXTT2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09c5eb3cf93b441600f35d7137265226a6e09bf5753c012e3ae1a77f8369aa6. 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/AUXN22300650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809658204da1281c480ee14f7ef9e5eca5a95f42fc98eee3c0f9789e3f8531a9. 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/GBKQU2319570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6bdfabd2029c38c834a3f11319a3b3f3ea8683b57e23a5a1554890c684fe23. 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/BCXTT2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a367ac04943da51c5c309bf203182ecb6c7b0a2f3ceb0b0aed068c92b42c5. 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/BCXTT2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c703d2fd25603e022115e17f88549513da9d1516ab8980cae4b8d8c508b6d6. 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/BCXTT2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42547ac47c83a971d26fd0c68fc8bad0ab3e213548c6bd7e3457d3efb7595438. 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/BCXTT2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c28762b60edffae9fd2735682f4c1b12fda1bed13ebef6e921aaab2b9b560. 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/QZNJX2183393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a02f6bf6c71c122d47b1506e969674fb0518574196a827dec051d10fe0f4e87. 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/QZNJW2138681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55a079505fc71c52ee6ab7c3a27130daede8383b5cfe78e572b8b8d11e44e0c. 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/GBRKQ2108731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc10d8b2ee43945d31ad04af33e0770195e7c9144257ad67e34bd7789adfc97. 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/QZHZ32147338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8b3363ec0ce431bde11653af2c2cfebb45c990bb85a1326b736c0e2ba6b0ed. 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/CA5KR2132993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab05bde2902eb6d87fe26b42ddf25e56aa9a29eaecf6995d8b300c4413e5099c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJW2083523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab05bde2902eb6d87fe26b42ddf25e56aa9a29eaecf6995d8b300c4413e5099c. 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/QZNJW2083523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b6378ab6cdfed950e4dfe975c6a244eb32dd30f93a02a66d8afc261c9a4bc8. 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/QZ5FN2053184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0016acaf8c47bd7505c89fc00e064a2e2097ef11c2f52df32ceda909baf1d3da. 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/BXIED2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fdcb9465aab3767b2b9cfeec6ad94ad932cb17f4bc93e3ac4327f5a335242b. 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/RUA1H2077555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd52424cf5771dafe87ff5c8661479c360a50fdae3834ba0047351fe092922ef. 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/GBLV61929610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86579f1474431b234ce851d3bb173a63a9502d8e6980c51ce171fa49461fd96e. 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/RUA1H1947619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aaf4a0ceb2f6b75b5882fcd897ea5ffc2fb1420d45d2f6d568cd1f2b89b738. 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/QZ5FN1950746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e763585c04c5d35c72e5eff8538a309388b3e8943e6b93034c63350084b22. 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/QZ5FN1950750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692e6076f425be38dd1c5476d05aada3730519c7cd8a0c46cb60164a16138685. 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/FR96X1870373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ac7395282804b5f3ccdddcdb4c8ad39fcfae17e28e5ca0b22ce449571b134a. 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/FR96X1870374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097a561ac7b4670089a50b7e2d2ee559228a22b9b26195f020ddf9685a16dffa. 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/FR96X1870375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12fd60edb5d663be190f201624f1ef7e509c36584da5f43dfb67a370e39d75c. 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/BXMEA1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b19d3a5b1693c30f642b67916b6df78a690f8bea07b74df2f63125103780ca. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXJLW1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcbc873edd1220aca5092e9e2c898216821cc04626ff71982716fcb0c716a32. 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/BCVP52300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615b434cf45a1b8340eb17bc3de1ac93cb5fd4cf3b67865fbf556adbeffe27f1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BCVP52300038.