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 0x042e363df1dd0a8664c86579c71c41a2b3863437c8d0746e416f6cb5e1cb5aec. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60f5b185-8ef0-4210-9520-134db1eda9ee.json and https://artists.proofprofile.net/proofs/artist/60f5b185-8ef0-4210-9520-134db1eda9ee.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 0x42251075a5c2e2f76fef056748859459db9b92a1b7df1146859e4e4c5e1eeb54. 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/QM24S2105736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa539dcecacadbc533f24831fd7e6ca179d6dc98839883d2a674bdd4224d397f7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS652303724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5ed20b631964f9dd5714001b335a6d9334bebd8cc9c69d186bb3ee62efe192. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHL2364183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e49e327cfa61d0f46b576c7c582f7cb72dd8c116929a021bd00333bf24a51bd. 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/QZMHN2432984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960a5502e00bbc1e5eb4b26b38b660e206f0e05eb68e91be126a976269dfafdf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHN2499451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42251075a5c2e2f76fef056748859459db9b92a1b7df1146859e4e4c5e1eeb54. 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/QM24S2105736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02daa15e62670d021bd95785006bf41cd9d9d233f40406a1d758c716b783fb06. 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/QZMHL2035456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420b04c6000226fb3459c13ed4a1015095938ccd969a5075f0038728b37d7a74. 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/QZS632448936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e2cfccd167ea81ae890313f7552bfba97a3f97cb3927203ef972c88e71eec. 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/QZS652473827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea4ca76e0ed34024e8a3ec4bf3f87b25b7f9d46ae94d7513fe827cbaa3d9a05. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZS672466848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f541db3091651d7f2f95ba6930c1ed4dd398a19e961d9be8ab7d844a541e81. 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/QZS642467500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc564ddb1479ce2353891e95b0151eecc1cf633ead449dbe96ebec0b9263c63. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZMHM2441788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414fce76cbd687e47f09995394394d3a4147a0aaa679817ef129d46170227648. 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/QZS662403604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e49e327cfa61d0f46b576c7c582f7cb72dd8c116929a021bd00333bf24a51bd. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZMHN2432984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a1e670a496aad86a1dc949bc9b2f17a2ad91e1286b3be440d80cb109461bae. 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/QZS672401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff07d79414bdfef7734caa82af525f9e06c972d117f89f809ecf5f2398b09541. 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/QZMHM2447876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d96ee74d1ca4b01c5758312beae56c6b386598ec7471cefd0e4ce116237e94. 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/QZS662476144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa701120f0f8d4f60e94a0a047823659c4950a46ae11e2d395ef4669b2e1fae64. 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/QZS652408291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3d2ba6ecba13743c9fceec504dc088d672634ea2be298040b6d91402a0d53c. 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/QZS632448358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a64106888ee6306cef9da09a21cc5ef576d62cdc5d20ddfd14eb87846c2971b. 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/QZS662496848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4831490872e664efb569270fc86c21ab75352a164d7a275cbac1483e7f07dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS632468458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d993be9736a8f087994a2b8e5d9c17b7dd8706fb01f21aa8b628399f17fc549. 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/QZMHK2424306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f61588834e85d101ef9942c4954ee17f24497ec41f97afddc62fb0c03949e8f. 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/QZS662430580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ef1ed5f5ffe8deb9c4fd1a03fdf0c9901ed68d77646b6bbd0f9ed5a1a8406c. 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/QZS672466432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed78071ef72b607040ab3bf315e0f9b2a41d9a5ff694217c2787d436e7d0c3f5. 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/QZS672463191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ec2c6bca8215f8e488fe363c44db3b1e5755f9c998b7dc00cb88cb68d33475. 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/CA5KR2508065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9c47d7597b3d00a5ea45b5b2dcdba5a0420e152a221b609e789fcd9c8814f5. 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/CA5KR2508066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931282629ac0561dd568729b4cc5519da581b578d318b48bf235ae85d0d128ba. 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/CA5KR2508067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13dd3a58cb6dadda4c8720fae6991ffcfb37af8b0e28f00ae704e6546b1a4a8. 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/CA5KR2508069.