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 0x71a62c3c1314e0661e53626a46edbbbafc77a7633e775280c858661c1da9cf4f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ca789b7-a178-42b7-9dc3-f5b3cfb34b08.json and https://artists.proofprofile.net/proofs/artist/2ca789b7-a178-42b7-9dc3-f5b3cfb34b08.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 0xcd1a9277652342728a6e7abf6266c9707443316b146f9f72acbd98377e7f9e48. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMFMG1388149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50853ee44e6fb111c0075c52390521a24729ed3b138ec235638dc4ea064fd1. 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/QMFMG1388156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfcee1c9a806b4eceae65d7cfc90bdaf62f95d2166e0559b11c881f2b8df161. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMG1388157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6a6bfb575e5b8773604ea529201a0905194ab3254c3d00c8436135c09b31dd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFMG1388163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f1d44d549f9e1fa639e7ef985e717a6f935feb09d30db468a414ba90f62f04. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMG1388165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb61a287ea10d08809f88e0f215d8e6e682d5c7a25befe34ca464e8d41235b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RUA1D2045078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f490b555e5f2084b13185b0b69a247023ec5f8fdffaf72100583012ab19b660. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUA1D2045082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565c2dd9ab2d4f6ab1629af8cf770ae081647166f38e1b994962804542b72d2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1D2045083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28521f3e4d5999fd39436e6c6534d586ad14e36279532b6034a5944d78e37dab. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUA1D2045085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b67306f92dded78b864cb8198dd0ee604ba62c7dc32f1abaec6d0cec18eea97. 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/RUA1D2045088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70cdf74cd04233125c4c773f727e42a382cb798badc4026250eef3f2ff47ed6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2224262.
Это не качает (DJ Mixoid & DJ Scoop Scratch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc944fc2b867682d57cceb5b603d974f91878f48a73d6bf62df874369c26ea24. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/RUA1D2224263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e71cd4cf5fb818a0724589395b817048c44e15dc611f02adeae620984d27e5. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/RUB732046173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f776652542b13d3c1529031dcdc28503ad84aa5ca0e645887346f213ef6197. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUA1D2345941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5caa7b72b18ab23183b085e09b1c66273f82acf9f09d4068642901b40e7d2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:37Z), 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/RUAGT2300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f467349cfca295eb7eb359616e8bfc04928012956a8348799a5ba4ecbfac8d5. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUA1D2424907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f807ee4208153d0696a1be22577b5b2b946e2bae3fffc0a22c81faf6fb800a. 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/FRX762090673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b198abc10d955f39a527dfdbcfd37ea052cff85d0978583cc145504bf6b167b. 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/RUAGV2303269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e63ad089079897e0828b436a103a07d9be746d70e55a03192c925f95c97ef93. 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/RUA582103637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bfebc074d79f6f1966a113bfdf051f326816becd93e792bdd620d3c10d5e97. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRX762090670.
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