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 0x9618f80174bf7a3618c2bbe6588faea13de50c93992ac9ebf17ae439d3cbdb5a. 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/306dee8b-9d45-4771-8c54-8e838f4060ef.json and https://artists.proofprofile.net/proofs/artist/306dee8b-9d45-4771-8c54-8e838f4060ef.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 0x76e2ab1411dec4ae12a1cc4495a0edf549f6ce1b3637f447fc447c874c07272b. 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/RUA582107235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423ef45b8005a5e93e7cc0774a14bc8f6aecf0e2d126cc9a9c7a52dfb5fc3ebc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA582107244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2183539c7cfd9143fd603eb80e457c81889792e259d2679a4e5ced04f5401f48. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/RUA582107291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be23c4f886b6220a0ad3620e4cc0bcdbc8e22323a029beb433a890efc288933. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUA582107296.
Умные песенки: Поём и танцуем с Крошиком
Умные песенки: Поём и танцуем с Пандочкой
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d701946bc3f1ddddb2d4476418a20d119461fdfa6e3d7bc5804c98da02562a. 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/RUA582107335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa705dc3d326249a1783c12ab5f1241a900ad32f02b2ad71391b889caaa300cb3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/RUA582107308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb9ef732e094407a0f91f0e3b51a24226c442b14f51a0da0f4b92dc8d30273. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/RUA582107329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622ce245e69f66e806af9751d84722486f077b335836d405fdec0764e7020e00. 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/RUA582107310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cb6fd8bce2a9ef006d3abe231ebfaab3a11adb0d3615cf82fc8421f0a217a6. 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/RUA582107303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b361f4000637cf96acfeb5e4ec0a22ee9b154bc46fe031e7d35d5bc639b07. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/RUA582107318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7182c342f3433b800f72d1730265c962d76e33c728c457698bb1b0cb0b5d5b1. 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/RUA582107272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6a6d86d1ba87f7f8ef55176520364a2d743852ceeb35e16969f1f7acca8a4d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/RUA582107274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b801263899872328b94593c35196bb0e139389a80b6ae7947b37f6a9cb661a6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/RUA582107241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab78925cbb14317a8c620abded77f2da382cf7e42595141177b7301b67aa4d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/RUA582107268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c78fc3a3e43daa0c8df5874ca67332138c18d1b47835b09b56eb22e0645597a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/RUA582107226.
Умные песенки: Поём и танцуем с Барашиком
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b68f858fb7deb9b0f6a47f1de7e09d26f0a3dcf7dbdf6ef46ae89445c235b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUA582107232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f7ad0049ca415f1bf7565a089adf853b5bf44cba2d95c1832f691be14bdfca. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA582107234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c47cd675a3a1878dadb4f512eb870f98a621682762a26039edab6fad9b4d883. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RUA582107236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5627d00eb6df8d453a42a5ae8a69f86a612693a4b79176d92c8722a7303febc1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/RUA582107247.
Umnye pesenki: Poyom i tantsuem s Barashikom
Umnye pesenki: Poyom i tanczuem s Kroshikom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc0e5186491cb556fd2c4cd5dd21cfdb0a21a66c40a63bfa5bfbfc68e5493c7. 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/RUA582107666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9254b2598c89b0fe45d952d5883f73ac394510da059b295a445063d94cd851. 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/RUA582107667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3501f9e1f82d4813bf6cb6d4c666882ab32ff0b088e75c5ec9b498589cad01af. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/RUA582107669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d3e256357c1be8ccee588e0f5c0aceacf37882e300455b4d0630912aa3f0e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/RUA582107671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c76ee84254789c20f601dcf0f40fc89e703c5bb4e512af68c48028705a29f0. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/RUA582107674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29c27cd1b22d10e9a7bd8d3be450848d3a4e57a691d605ee2a6a44b75761850. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA582107678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5394e58044b62ab88336b6735be8f986e09f63246826f20642792329a3af3bb0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/RUAGV2305858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118f1e42187a60b0c7fa051d819e47f2b233cfa6e20566b5759a167c2c97e4b4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/RUAGV2305862.
Малышарики. День рождения (Музыка из фильма)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79cc7c44564b0aa4f4c1e82cac0b33392fad0890b5a78e16af387fb3a3b506e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUAGV2407545.