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 0x44eafaaf06c600718f5a71d5b3867d7635e5dbe777bb364e54e46739bee5b4ae. 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/56e1d102-6467-4dc6-9f46-e8d2211283c1.json and https://artists.proofprofile.net/proofs/artist/56e1d102-6467-4dc6-9f46-e8d2211283c1.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 0x29512ef05a700b99fd1ec6aec9f0bfa50d4573eb50952768adf3d3133e083314. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMPU51635296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6d649566f6f9ccb07174c6e34ac7c4e2783e9aced112317f90fc9d7c3e2389. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMPU51635289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9961d1e0e13669c2f1ba27d24a3b44c5e84f492614cbdd90387ddb4441f39dc6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMPU51635294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf12135dc5993b41557e18e82c85491662c7d5cb73efbe6dfeaa765f6cd3b3e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:56:21Z), 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/QMPU51635297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d9ee6b2e604226a476cf7172d51d1629cc7fe6d000a0fcb8730a34c72943d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D1708230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2b501d2597619c7187461aa30cfbf4ab26b0d1afa557581a049306eb6a0df3. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1D1818748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0544d8b86de8d79c876adcb4dd70b0d313547efde223045fab81fa2940a48. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/RUA1D1818754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98ad03fa12d0075e08f8b6dd06f50d29abbe99bd88dea6c901e24d0ae9c246. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUA1D2057346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c142e8ce7f6d72ee0b93ca54c619cb33bc830e5ac4cdb014b1e3c57b7076b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D1904991.
Человек из Подольска (Официальный саундтрек)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a7b8588643e9271e6b981a5f6312612dc4ecf089740f4295ef5e5176abcde9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2555929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c55f3b1a0be8d95f6cffe221c2e1d55a0937fa235cb644c8b54b666ec95806. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUAGT2555930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb996932ae9146750e8225c3cff9bf4861b48e1021434255fef557e15bb7864b1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:56Z), 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/RUAGT2555931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7356baa24aeece2e5a8c92a3389437e3756f54f5a71ff58b48b7ad08676d136f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2555932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238a9c6e1df1c8b42b80299e10bd5a3a4d8721f7423db827f806d61c3d84dfab. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/RUAGT2555933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9abf97df8e3c0bce028b5ab6424d6dce76681f5e38167d38053055b5dff877. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/RUAGT2555934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2085178402827cd8c25a401f0b8a6dd13feca0dc24156bc262110872d6c29bd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/RUAGT2555935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9c39a62850173020e1c6458016306594a63186ec8ef8406e40d75d20b4cc31. 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/DGA052070530.