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 0xab590de9990b5910ddb4ebf6a00b691d3e1a534dc5587ead08809e7e69abe1a0. 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/2bf45d49-5c4d-41cd-aa57-0329f62b4b2e.json and https://artists.proofprofile.net/proofs/artist/2bf45d49-5c4d-41cd-aa57-0329f62b4b2e.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 0x24e3a2e18bce76813c190856057392b9a183deda9243639fc1f99e6f9f187842. 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/USLZJ2046942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b777cd8d448128cb333b0c8e8192f61f41ff928ea4143aaa5aa3ca0f25c3053. 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/USLQ22180674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882c13c4d3873e63a3b91d231d7ce65f55e2f75fed00317e0f6e982a55f5cb3d. 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/BKBOP2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd0f8361f1701ffcd726cefc3afc7379690c9c6db4f4feef124de5328bdd33. 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/CA5KR2394174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1c4d4f4403ae87c9db8bd4ee89793d2f7309fa7b1e0e64dd730fa730cb5d50. 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/USLQ22180625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2178b181f7f734c59237ff9bdfd253988ce2d0f8b014defd8465cae4045e065. 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/BKBOP2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c30a9834eeb395290d988ba5f9ec9de6ff7b56298c52f458a3c661f897023e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BKBOP2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75448e14c864149a073189a70348438655c1dd5e49235eaf17b2848ec2f9c341. 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/BKBOP2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5d4ae6bb748473b10e7e242312188f9b3224ede586bd9066bbc4f8f65792f7. 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/USLQ22180557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dea651dc89a63021f04eb9ec84f9e98d21ea6bacf783ba2fde03a181e1b7d3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USLQ22180559.
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 0x11feced0914ac2f3330b9e67cb97b72681fadd394d59641c354afcb25a9dff0e. 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/BRUM72201411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bcfc742bcc03bbcc149d997476d356269bb53fb8a654fe091938feb8cf5097. 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/DEXO22228521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfd1eb5fe7c7ef3887a740a6b4205056ee2c1f5245c7557736a24610242cc6d. 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/USLQ22180360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da39d5eeb3b361d4de9f25aa3140fbccc531536361917f79caf64f29660bd33. 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/USLQ22180361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06767d4fef1fe8cf943a34b31772ee87dfe816b4b155540b2f7a27df313d56b7. 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/NLDD62100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3b662115df79c7d6c6b25620b5d086666dd19a0ba18a7ade510b4c0020fae5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5FN2063971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c32a55aa4fbab42a626dc7eb351a6bd1c23dbc527f2262f312493bc218ae57. 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/QZHZ42042791.
Já Sei Namorar - Wadd, Low Disco & WhyNot Music Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923fe4c101ed4106e6d7801b4420ffda9c65d73f286d7eadca30a2b413be6646. 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/BXLVT1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8257f343821f68ebf892e34193f583602cdbda6017d55900c7c20ae30357d72d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USLZJ1908072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b0e8275a8e2f3316746973e58ecd3829003b46fcc79972ced423b5080d90d2. 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/BR3T81800028.