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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01d5d0409156a8ac0ac5ae56b98a57eae05f52ac78cdc56b8b58254b29a5cf5. 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/5c96edc7-875b-4769-9e4a-9b8b8f01ec87.json and https://artists.proofprofile.net/proofs/artist/5c96edc7-875b-4769-9e4a-9b8b8f01ec87.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde5b027149333d2a73623b2f678416e10b7f0aa37aa91e1163402b35dc92a0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZEKE1862963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd16c7e01a98da6f20b3f4520a47aaab9a39f577f1badf800efa40ab51a6d223. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZEKE1919599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda8ffc7b216935ff3266b08e8e8590a2906310eee517a0b421af6a62e10ce74. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZEKE1919600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d0974334937c0b95b259e35573b42e270ee32722d1a64a37ffe89af75fd65a. 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/QZEKE1931195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c45b23accdb6a47e78ebb0d3edea0e0b8a14331b31c7253e360e41db31dcfd1. 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/QZEKE1931196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c089dce88301e44ea9794ab3961304a208797fa8f92f6e95abe879d1003f254. 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/KRMIM2008868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28819bce00fa59459c0f1d47b4457614e1c9d9205fd4b34cd5c05f921a4353f6. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:12Z), 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/KRMIM2008869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22ec3762347571fed7f123e7875c652d7d0dddabf56b4b9e4c5b5346db996de. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/KRMIM2011491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fc0260303f2639343828827f7310178fd9d10966311e5f2339a55e8527a79f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEKE2013830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac3cca612fed668862feb9ec5aec0a52193b42ff56684ca32ace1ae6f99ea8. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:08Z), 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/KRMIM2022006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fbd555fa37065b71d6c76e9a88f818e4a6de59ce51c7e11ee9c640915c1f63. 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/KRMIM2027447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119f17cd99065150c492e862432c8b32e227604da69678b1850594c881165274. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRMIM2027449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28226395dd01f6963b3125457007631a46a9d36ec37b0245ae61afab5f8721cf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRMIM2101717.
Hold Up (Feat. Pat Kiloran, Ashley Alisha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50763af999c752efde110a86aa3bf493044c2df1cf152f040c150e1791b169. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/KRMIM2126597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e67f5c0cfa6a78eb5f76978836e8906426cfcd2be30ae47ce95114fc6684dbb. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/KRMIM2126598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7170f5030daf647997b4246f0380eda4e2cf1b6a128117595d0c401b55dbf9b. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/KRMIM2136754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35e816129733d8cb9cb207814e73b8f01e225313f43b1ec1c276a5a714d58cc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:24Z), 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/KRMIM2136755.
Love Is A Heart (feat. Pat Kiloran & prettyhappy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3482d6bc1ce2caa9b7e8a8acb3fbf86312ae1245c7f7d712871cba7ecb46d40. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRMIM2141747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24effab95cb38ba0708e4583e31ddac0baadb74d9a2a41a5a8502bdcaa644af. 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/KRMIM2217365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caf7f7732535a12cf14589b58f43bae63a94a64c863475cde7c9ff01d539319. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRMIM2336460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47392fe7f36c8129f847c91766bd7d6fec2189ad92c17f55b545b347129f643c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/KRMIM2347604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13a4059ef1b7053969bf34018302d15d3586f1ba35df3ea9dfea3868c184fe4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/KRNAR2352939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e60dbb8c0fd5a59c8117a85ccf35e324c0ed41cb0421f246c2cb32987212cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRMIM2449707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b8fc84ff25fbc47e1a05f9fe7066cc6b93a6965f57d2b750d99c6f113dd601. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRMIM2481238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92d79d62bb45c9d8e640c82b28e4858226010b826c7b04784c4ac24ff4eb721. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/KRMIM2540937.