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 0xd6850338db7d832812f5f807343d43fb58fa37be68c67222839205146a157adf. 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/a9a55c9c-b29f-4feb-9edd-415c6326db47.json and https://artists.proofprofile.net/proofs/artist/a9a55c9c-b29f-4feb-9edd-415c6326db47.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 0xc16aab7667c2ebe84c807a6040059c7c75375c480fde817f59724b1b8b832e80. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:58:03Z), 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/EGA252102947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b296c84554a4f6144b327774a6e5bdbff19bae8ed52bcabba5110ec1851bb4. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/QMFMF2049582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ad5195425fa4cbc5b6f09282f238253df2b89bce12cb7c26da5e8c70fdc411. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:39Z), 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/EGA252102946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2758b3f36c024fbc05e987d48519ceaea4b8fae777286789f90ff7338c30bf2. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/EGA252104605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a68504acae26c0283198f957ab9398cc41f626414147bcc31a31a48eb0483. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/EGA252204736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac464dc79bee3eb0ff34dfe9872c51156ace468abb74f911f03d8cdf0fc5ccc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/EGA252205090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eee3c6802576940716c9b214e86abdf3f7a01602f811bec5d809aac1dd1174b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/EGA252205670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316be03ad0c85cb2748bf4c327a925aa1358dc64330e6eb59fa51a4013da56f6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/EGA252209248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe63b59326deb5e09e6718df48e49cf5512442e835264c3a64ac8b9beaef3f2c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/EGA252209594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593f115a0a12c7b1bb60cd74f90b9cf82a05300fc31538f667e7809bd301eeeb. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/EGA252210968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036935c3aeb2b573a60e7f379133bddf2c0aaf05862ef4189859227c657efb51. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:36Z), 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/EGA252212493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1957df7518f8b2f8360e7cbcdd92c6491acfe851b6d8624a26622cece919b679. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:35:14Z), 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/EGA252301746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a95187cefabe7564039da009415b4ba0ba64353a06e5c8095340a39e9a1f410. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/EGA252302631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c1469a64edf298a20b45d6b3d73192cf8e067027fc2e842f1e9ace5b2e9e0b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/EGA252305233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1059938dcdbf5852c6c2062780bc8a4d04089141f14e78770d5448463ae78d5c. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/EGA252305337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6243042d3d7f4ce1444dc9bb43466ca94cf3ec9a5001a2362b15bf3088816558. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/EGA252307379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5256fb9b9fd65e2791b7fe0d1f356c4c7ddfb53d835e1070fa731285dea0395d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:21:33Z), 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/EGA252400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94fcd95da99dab5fe9c7d602df81e7044fcab9a2afa6e0a2c73212c2be7fd5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/EGA252401081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3c6e3462d76ae6032cbfdefef77803227501fdfbba69c31c19d2f972c65fb7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:04:10Z), 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/EGA252412804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8602023eb6b817d2577488108105b01ffe163e38601034072618f44916a9e0bf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/EGA252415599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcb4df4c077c069e646533c902661e4dc49625b3544136f3026a7803338696c. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/EGA252501333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b7736fc170fbdc748f9c5876c7cdd7603b257855ebf40885149b46eff94ab2. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/FR59R2516423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccb481c2936ae519d24e808c23f99e8776ab65bd69ebc2382f07b8e0677de57. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:44Z), 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/EGA252503078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16e3a7182b6e22afb66f9dd2e1f8e35795f8222081a02d2ba03615d1608292e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMFMF2545276.