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 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 0xc8739df4b4288f27c043eaff5848e187a3f5d4699089597fff2ef3c526af1324. 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/78934d98-9b40-4a77-8ff2-c552dafcb810.json and https://artists.proofprofile.net/proofs/artist/78934d98-9b40-4a77-8ff2-c552dafcb810.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 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 0x37d1d46c7e5c7d39632dfd108df4abca08d5b22ab85a2c64ff984936984f528d. 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/USHM92101766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8841ae509ebaa536253225f4da02d03d2d00d7987a1449d13eb4d007963ea3d3. 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/USHM81780140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd371cb5cb37da3d1a825d9e26132a1667a9cf8afba5cec6bc386df334a26288b. 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/USHM81780142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172f1cc50074c311d75097fdf0cad05d31783eb85e446a67635023e2b45c9214. 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/USHM81780143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63ae7cf76a85281f01a8356460a26a712d66f0f486120025c4e4cca0d17874. 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/USHM91667464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0862e6fddd7481e59d667fbe5ca23ac6da534be5d32d5d6d177381dd23d4f08d. 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/USHM91667465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80141ec576407e505c72caa5f6e4f5874bcfe85e9e05bf144abdb3d46b38d9f4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM91667466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc69f544093c99a7e1a072255dea9362ca1010fa268e3c819371cf4606acc55f. 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/USHM91667467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3931927fb4ba08c8111b3395922976565c3483616ddbba4a13fc889d8041368. 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/USHM91667468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0e07b6be5141609d7a94785524b172fd9d610115e8656e6cf03215018501c6. 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/USHM81625834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83370f8375a50d77602285bc5095e6fda2dfefa6c5e8ec36859842949d95d5a3. 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/USHM81625835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1947e655744f4aefb6ef07e45bd780a53443605bf39e458e429b790dc07903be. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:32:56Z), 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/USHM81625836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daf4b8ceb7946612ab36681ce4ccea0f80528758232a8ecb50f151bc3c25789. 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/USHM81625837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcec687774b480c5f652e4f40b575a4c821072b0d6b99b7b1fdf74a8c8b25d55. 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/USHM81625839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d643a6246e6b9ba4b696e42512c464bbb47c47a14f1485981707d1e3a7b446. 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/USHM81625841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9983d1d584243b6df87d0eac3d4ff1afdfdb7734b45153c4580849a90265ad. 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/USHM81495909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887689ae23e74fe73d387867e7a5525a617bad778b1a5aa2064ec1362e29502. 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/USHM81495911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be6171b5e24333c6c48d03c23087b48efa2a7685b437bc188136677a05b66e1. 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/USHM81495912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6649b1746a5b1b20229f8354277b6d0db1d9749884f4494e0ac757599d4e1ecf. 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/USHM81495913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ab42f874ef0c58e7dbaa5054d30d412089bee574655b4a56e732dabad621a. 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/USHM81495914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fcfa1337679c2cfbf1f679583d50275b3d0875b32aeaace5871ad0cbe456a2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:42Z), 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/USHM81495915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f293813b9a89f4020efc679cc0b874850cae0ea71e1b83b8473d40ca87df3e. 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/USHM91302108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881f6c736e9bc8d6037a197a2eb608e7fd3324676105efff32a9887d1fc33462. 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/USHM91302109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafee6c3011654bebe34aa5fd6cd3afe131b1949e64e2916cb7ba3db145ab557. 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/USHM91302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f7359ac516597000dee8ed9b0a7e2f9e2e87ca4480cb6d0ff44d4329f5d61b. 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/USHM91302111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34ecd01eee33a6819117bbd3df4c61ae61609368015208e51c69d0f8cf72498. 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/USHM91302112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05ff0b0e2981e5c736887a8f3ec102aa2d74a382a0d7e42095fc9b0c57ffe0. 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/USHM91302113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b37acfc959fb8f0639473ff11f710e07f5600e26f7cb1c9968a7762762931. 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/USHM91302114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809be9dcea6c1e2a92d4ebba2f534687468a0d7b629bfdf2d4c51f55b51e9377. 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/USHM91302115.
Ong Namo Gurudev Namo (Kamari & Manvir D'n'B Remix)