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 0x545f8889435c9480ee4172b5a15eacedb7949006ab1926a6f3a500d9e4a6d3e3. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68b8b5a3-590b-4efb-bbda-0de0cda8a6e3.json and https://artists.proofprofile.net/proofs/artist/68b8b5a3-590b-4efb-bbda-0de0cda8a6e3.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 0xb5e68e9f711448d20bb60ae1c917f1442eca1f14bdf51327e4a916058e84a603. 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/CH6542040833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e8c204f68e7ff00a78ac0a9e54d33aa76850a9726a9ecde6999e5a615a261b. 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/CH6542040828.
Back in the Days (Remix Album 2001-2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f052ae5e645cb93cfa195c2de3bba6255d61d6c9e383bad1f3db6eebdf8825. 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/FRPHC1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6a46a9b6d55ac6c3c52214f14e731314474f89a70bdd8159afac4e665b61c5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRPHC1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27a05d38eb38cda4768fe4f36c27731630a9617c3555bfbec2b3e22556c32b. 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/FRPHC1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a2fabbf2672adf3d772761b7040c75638bd033d1783f9e9c0a3a0888b67a4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FRPHC1900017.
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 0x409d07c49b11926e5a8bb3b74236a42abbe365ead7b6782d0be44b1e4078fd4e. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRPHC1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88001566740c916583dcf2cd7600f9fff3fb30c7235b9475d0b587159f05765c. 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/FRPHC1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415d54eb92fffe1d39252a94054952fabd646cc0afffc254f95ff522e3cf74a8. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FRPHC1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efe71619452239a3a8739db1767ca320d04d764fa2d1321aa5c9b596e35df8d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRPHC1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44216878d089c11f1608dfd7bb6abf97b808c5f57a83ba2a62053054c990e558. 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/FR2X41666831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9251fc307e389daa5e97f2efcabf9ab0d2d44e892dc2abc511624a50dea8ae. 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/FR2X41666837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f19f7c0f9f7ea148c25a97c112c9714f3ef7a2c4c5a3f413193c252f8f5acd. 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/FR2X41666835.
No Gun (Inna Mi Yard) [feat. Chezidek] [Feldub Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1284772ed5d2782ddf2e94cc3ecd7d5c31d460387e925a87a70cca7c9beb3b11. 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/FRX281700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f00b72983fd1ab23e562e8a69ab51f90c4496f6f6d20cb72322d7a43b42b4c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX281700165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ff9eff27d463c459fcd59f87d694260a9502b4bfbd6e7714b4d264a97498cd. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRX281700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78932ff532a2694c3dde5a91375a94264efa86eb29453969306008f01178a86. 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/FRX281700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe803bbeb444d89b43343cd4c0c13db059aa84ac6e5134d07641ee9fd3e6997e. 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/FRX281700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ce90641c267c021b9a71467d11ac3c7edd338fe5b8e7a83c0808edf898bddf. 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/FR59R1807706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e17bd1c690ed62d73148baf3ee6dfee59ada8ec0acac4e2f17e6e0784d7ebb. 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/FR59R1807708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e51a9adb4957f577c2fa4c28e09a708d9699f0e4ff6a08a3dc8b16d1796ea5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR59R1807710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc599037ba2dde5cda0c6181fb8d94fc6dc9c5e27b57fc5412b656713d14a2. 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/FR59R1807711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91647cc736ba591774024b9ab82a15e5c63b49069739ba6bd969abcfbf290ab. 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/FR59R1807713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5260f2360edfbcce3ba4085219b379b02cf4eb0c7f981766b6c1ae2faab8091. 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/FR59R1807714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619312072ff36d42bd78f98f93be772f03fdbed6628497b3261dcbed32127e1e. 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/FRX762101770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb23e3ebafcfa0631662cee440ec18fdd9d9bfa16ca1b5c28ec048cbd64f1e98. 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/FRPHC1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcac3559b92bb729841005447c2fe6c2ff5ec3772df74751301816eec2507461. 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/FRPHC1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7909cb932cfff0726577c538ae7c3bf930b199ece341c291bef15594bb8502. 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/FR3V52000335.