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 0x97e372da3f265b7d8dc42b238f3738e01b6c91f0e641712c4cddc254b1eb8aa9. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36526662-5bcf-4058-9252-479b10d8c495.json and https://artists.proofprofile.net/proofs/artist/36526662-5bcf-4058-9252-479b10d8c495.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 0xff06e540fe3d694f4422f6787683b70afeb508240e6c025a06564b42bf9373fa. 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/USSM19900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3e0f9ab049ca03aee8b72702c1b788f7b24b63f3f95c0052dd9433f22ee773. 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/USSM19900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644cc51af249fa37ee5e132e9f9c813d952cc4e697abdd0a51e0a7b5e6983831. 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/USSM19900087.
That Drama (Baby's Mama) (feat. Jazze Pha & Too $hort)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b3087442df39080f7065f42962d33653744ef37204d63a393545ffc0269817. 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/USSM19900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76676556dde6ca1447f989e1b738db814ee9457d696c38dc967e0f4ba7ad155f. 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/USSM19900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49d5e2beef3fa64824b5ad976ae91da91a3df39ca405c3e3f887a590a6df5d. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USSM19900477.
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 0xdc2a3cb89df02532c7418f0bc84b5766d0e60174804dbed31b1d7fcdc1fe890c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USSM19900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b00c0e61c77632b8571e6843ffc244d80773b22c029113d1d8b841f23dfa93. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USSM19900481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba195131b2e1a0c4be75f64f46b52298d777879a56a0db0cb0e7a65450e855a5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSM19900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fc91823c4f8d5e94588790cbca2e31197fad1436709179499a76aa1f42459c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSM19900476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73a4f133c1f5e314dae542217d5e6ea16b2c7b819511b8f727169e1958ebac0. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSM19900480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d483b2efd13a60094b9336bdb1653593dd9b3ba4201f6c768a58a90a33674c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USSM19900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1c5c3a5c7dc706218f98515c4c133ca89a17de0f7304c95a25bebb6366227f. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USSM19900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0b0778a78c31ed19712e826acf2be12b8335f8c72260015928af6acc6ef0e4. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USSM19900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057aee7ae0d01bd3e479bf2c45155b339523321a396204cfe98f33fad8f8e20e. 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/USSM19901190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb570a88b0bf8f689826c696d25b85d42c08fe33856e4c55080c108b5c432600. 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/USSM19700409.
Underneath The Sheets (featuring Ruff Endz) (feat. Ruff Endz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27609bf6ebf1031e69c572028531add2b6e766b5dd833e1349c1a5b40eb3d0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USSM19901249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2083f8dd30c759a8e8aba2279240a2d31be0800f1acf2bacb3e59f3f9747a73. 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/USSM19804640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1de695636da4cb53beac7986cfe4eeba0773efa84001b9d096abbc0fcc6b22. 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/USWR60300911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc0eac02c39a1a38e98aa3e198dd0ad0e65513ca25a69956fe55b0fab1b8d25. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USSM19900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1c6cadf2cc7f883e8c0d41a9e2f578798daa96311f2229c1bd82bc3b94a6b6. 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/USSM19900572.