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 0xeffdef7336de46663f0a5ef7ad9e00c65a964b356328d0ea04d2909dfcdd5eb2. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/580b32d4-4ab5-41d4-9b0c-de2045d8c4a2.json and https://artists.proofprofile.net/proofs/artist/580b32d4-4ab5-41d4-9b0c-de2045d8c4a2.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 0xf096a005d810e653ceda980c7bc8aa242d345260f9cc4767a8582ecd411bc53f. 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/USUYG1145459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1313538587a6b1406d665ad5d4798185378ae991f9c7a18e4540e1e76a41c91. 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/USUYG1145460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea85c960bd7be7f44e914dc20dd6df670262e9cb66d83b45bd42b360caeb59fc. 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/USUYG1145462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ff2bf5d2c6989ac0fda841106ff953d97b4fff148c4f317f7a99fd7b973f37. 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/USUYG1145465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a98aec4196f178aaa3190ef623517b974cc6dd49ec9addf35657c0d8d51789. 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/USUYG1145468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bc275ed7ae8c5f28e639c18c47f75236c1dd572834c5c07958bf0d17e20f37. 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/USUYG1145469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3cba9dfffa358db30eab2d79928f1661ccc39045f9546943c883e1f57c5171. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USUYG1145461.
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 0xb1f757225fbb13ea397c0844a9062a07d59b938b60c0fc06d77900fde776ba78. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USUYG1145463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9608a293c70b938d45056fb567702d344effa077986b9466b8fc3452c0cf3846. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USUYG1162091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc985eb43cd31548b2b217fcc1a7f01f3f82995575e469c5aa62337b98535161d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USUYG1162092.
Case Closed (feat. P.T. Mulah & Lil Dallas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ba2b62dbdfc3222bb79f4e741d54983d9fb30e3f6d47bde3eb7c971eb9ae93. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USUYG1322690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69f48152926899e524dfa9fe21b0e1786acdb7e8e2076a5155db6faf570aa93. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USUYG1381029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bb9330183bf1f5cbda6147c8a38073c9158a2be1ab41ab2e5173bb78714350. 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/USUYG1524171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecae75f2f80cf5814abe5216199a692b50caf75ee9b4061e7f4e1f1fd22aa8f. 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/USUYG1281453.
Spunky (feat. Mozzy, YBN Nahmir & BabyFace Gunna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5dfbe818beeb45d3dd6934ff289879534331cd2076be405e62418531c2bb63. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1254127.
Whole Lotta That Goin On (feat. Babyface Gunna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006d6796ab371f24bc6f8261223c92df3d000aebecf958e715e941aa85c569a5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USUYG1159259.