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 0xe5f9792bf05e23ee081f29bcea6c605d3b83e529ce33f486221ef7e2dc5f4e0a. 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/ba2328a0-a369-464c-a86c-1040d8eabff0.json and https://artists.proofprofile.net/proofs/artist/ba2328a0-a369-464c-a86c-1040d8eabff0.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 0x4f9bde31a029d0c9bddc9c5e2a1a0c520f4d51b30ddae82ab382d6117ac7cbba. 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/USIR10311874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5948c412356cd5ba2e92044403dcb107351d91cded23244c01dd446da6a38be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USIR10311903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a638a65eba6764b1d0d6d44d6deeb799f8c2586b98897b08669d87fabbff41. 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/USIR10311904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4b2b44a6ebae75075752d9cf696267c15f19bd1126e1263d1aa3778b509e65. 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/USIR10311876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec4c7452b0e99252ea4ac4a1e9905a82a0356ebb5ff4d5d5400657303a87cde. 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/USIR10311905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9292b7bd4b39a7e155b6ecaa5312ba3b9bad38d97b28d4291857ef1266193554. 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/USIR10311906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2bae07986f37a5dd5621e76bb7b5f8a8a453447d5a6db5b2bf239f161bdc33. 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/USIR10311907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf374ccee82ccb4f558df95f273908cedf99c500fa12471981190e41b9256bcb. 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/USIR10311908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26938f650de0319505cc3e09f55a34b644da44dcf8976f8b505f504cbd212841. 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/USIR10311909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ce64e3793ee5ec1c38a5ae71d8baf175111fd826f3eb418ed6ec7f4ea3d896. 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/USIR10311910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd6240cb66969464058f2c16bacf4956c40f13b2430d6834940621276eed9b0. 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/USIR10311911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7800dd1403545d096154e7b19ebb82cb689c970dfc7c25d94c78e8d4636cb638. 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/USIR10311913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeab1c12490659b17eb8f9e53a838aba092a7e5e4e9fa10d583770f23dc259c. 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/USIR10311914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7398591818fa753319535b506d40120c0bc8398aa9a11e9a876d2adc7dad9c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:58:50Z), 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/USIR10300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454583b574a5edd564c2d83b60e21e17f218d89865fde37c808b7db33852ffbd. 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/USIR10311915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39eb15aa28f4ae836f7c39bc89f0aeabcaa83c11fd77cdfeceebc1392613f87. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:26:48Z), 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/USIR10312150.
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 0x8678bac630e87034edf978722f206923c409e5bd79e24c48266d721cf5828a78. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USIR10311916.
Ghetto Supastar (That is What You Are) (feat. Ol' Dirty Bastard & Mýa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b746d673e122f9df67efe75c3e94f9b5ef1f50029a48b5ac1157e3b96abe09. 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/USSM19803488.
Lady Marmalade - From "Moulin Rouge" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98991b4be726d8ceee02f1fda626bdb6a09bd2944e472acf29624f52df19abe. 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/USIR10110334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff38f1b254932fe2485a3f345b19412e0dbb8e3121ab9a29e1178d5f490cb9. 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/USVI20000026.