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 0xea5630be77bbf19d62a697496a36aecaa7c9f8ce29fb593e974172702efc3fc9. 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/2f012127-483c-4c51-a732-e24f654be36d.json and https://artists.proofprofile.net/proofs/artist/2f012127-483c-4c51-a732-e24f654be36d.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 0x7c1753c10cdc0de5fa5896237492ce69ae085c4d6399887a50ffb5e6c500db68. 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/TCAGB2261583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6f293230f68bafa101476ea5c670dbbc925d9e507870f7a3b69da2858cdbf3. 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/TCAFS2180848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2123bea3161faba9451581b6b363d2d1c92c2333fbc4849beb893ae4dec49584. 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/TCAFK2151564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7ac4f724d98bac23f6f180a7f3475926ce7eff08617461dd2859b7e4537746. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFE2018102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf22cc5b48fc95efe641194b6084ffac04d24cf51ebaeeef74c024218ad80ef. 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/QZTBF2395708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da47eda28c614c2353f05cd2b0e3c167f842b11baf86d3d46e3f461d9f96a3. 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/QZTB72329864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe32a6bd6484c6f677ac004da07420f67ca37f1f363f15546441a6c0a521ce0. 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/QZTB62335020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389d94362326e895b21d9ea81e174952eb0b432c9afcdd75dcc831a2224de5eb. 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/QZTB22349442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e33201637bf7747f235c95385d71f476791a710df6c6cc18ae4b9073ddff0. 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/QZTAW2366346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bffe8102f23646d884752b501b7b9e61124c06ae38cbdcf9b2abd8df573162a. 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/QZK6F2391604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69624e07063208f79258d461152dc4ae0ab9dd3893e1e6babb06e52c93f201cd. 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/QZHNC2305083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810562a5558853dbd25e66dfdcb8862e04d7d0959ad4fb169b5ca8d0a5c940cb. 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/QZHN92321283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf68d5c5f3ea6e1cd7eecedd3f8f3f26cbc8bb01cfaaf433ea930ddddb50653. 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/QZHN32386733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe55faf3bbcffac18599fa9163737e4cc3c1277b6b66f0889bfd5c060371b1. 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/QZDA82304663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1572a7a0e739d297476caf94e74a338863ddb9e4a138847f2dbc7358dfb617. 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/QZFZ42322508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506581387ecc34b7f9f1fc912858b5bacd6976cf624875bffa8984adfd7545be. 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/QZTB92276432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cf7962daf2875d0279c39b4eae25405f9dd488d0e2ddeb6abfd7a36b8c19f2. 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/QZTB92225004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b5257b890a8dfe9a470f961f8ae167bf119c39b68c2e97c9ba3ec6533681c1. 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/QZTAU2242460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a741c7042765bbbcbc6f5aa84b987dd1d26d3637d1a50e0fb65bd0bc997acbd. 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/QZNWX2236810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b5b728cdafe4ed8291d5d55ba1c8dc410be13f96eec1a63075c8595e4cf895. 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/QZNWQ2263097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db5c68b08784f0ef8831a559afb90be8b6ffdbeed00e48227779fed040aa600. 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/QZK6M2249502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842cf5f3679352e3c2d293a2f9947f2368f134f9103a69b1d44259260c406f31. 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/TCAGF2297872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc93f69ea4988fc8867c7aed79da31106b6b504db81d33ec820f1c8cd0bf5ea. 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/TCAGF2203647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57b31569b42e22945d0c0179d4fa231497a5381daaae82b6860a3e68dcb2a69. 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/TCAGD2266423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfe42b3d5d35d866205a43082475098e132ed297cd60b39b689bbd3862d96cd. 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/TCAGC2212490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff50b0a2c9c85046c318e619356ded16111961317233732c87893c9067e0fc79. 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/TCAFX2173303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da80446d85a06b3c1a2ff0fd984f28d7408eb9cd4b23bb657665b84cc68a8b. 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/TCAFU2182690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce77701cdef2b4dff05dc73c844a0cda7886df3bf33e00f0060634dff2f06bd6. 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/TCAFS2143191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52ae8fa41b070f32d2eb732757b65633f5849e0f9c062396e4685aaf2fedbe. 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/TCAFQ2113426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89a8e5683b267bb6f5cb7d4d3292ba490c746eb89b24d5f519220e4f684f004. 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/TCAFO2151464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba501b6b49ed570bec6f365e0254e6c490bbeef889ae011dcb9c02b7074f9741. 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/QZHN52175499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a25a17bf98dc74474e83aca5ed907d9b18649ef3f2cec9e77ce1d0cfc892d6. 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/TCAFK2192106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd509a6d1729c84ab7f0feeed8225442fd26eda8909393c8a7f174acb659e3e2. 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/TCAFJ2142916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac45c02c543a257b338c97af6258a85755a4e6972206f7c96e399086a81cb46. 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/TCAFJ2189701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d88982a7a1ccba1e5be1923ce9bbb67b44d3335e0b45d74cc569562fe39d63. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ42430993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d78745eafcd03002c282088e3b294b2f823c2a73338157b170918b85a0da4. 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/QZFYZ2430542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe944bf49ad2783b64c1a3cd99301cac6b19f77f8a0f71df66c16d8e47307550. 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/QZHN32444412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafdf5eeee679bda2eac320f19904e16cec4e7b8dd7c283f2c563064786357a5. 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/QZWFP2380781.