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 0x2966bebf10746e5f5dab448106ed53e347cde19d4bacba97226fae875bfed492. 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/0d03ec2c-f573-4abd-95d5-d5ca34c487b0.json and https://artists.proofprofile.net/proofs/artist/0d03ec2c-f573-4abd-95d5-d5ca34c487b0.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 0x1914d25aea270354f3e6345abd1636a499d771be8485b56b1031c3f64e17c00b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR10S1713270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd65e5c248e63975eddc09d0a53f0b79f1fbdc179bf90ac25a01ed5e85aa42. 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/FR10S1713271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88de116eb8c959df3a4602ef770441732b56858e80aca43f3fdecc29bc14f48e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1713276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa838638801c39548ad49658d4c64dd3595714bb8824817d002137fa572224e. 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/FR10S1713277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e722773c9fc1ecffb1a5a8a991283f84915ff7e362c50fd0a4c0847666ae85. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR10S1713188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb98f483e5d0ad9f2a9a81a513fc633ba7d5768d995fcf9fa8e32db9ac7448. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR10S1713192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293786235df3d35ee341e839d59e54fec04f152251f8cd2cdea5a025b2585c58. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FR10S1713193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a61ea73deb3270efcc37e6421f67447b6b06153f9dc1c14ed4d9d35c3786c. 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/FR10S1713263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb169282c0906ef45627ef6a66fbe08729ff5c35dc437be37755c9c4f8fb9bf24. 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/FR10S1713244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b6afc887ed9338a90b0dea59038c329ca77491e9ef7a41a8e5eaea1ac1c43a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR10S1713246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e8f0ce890bbc90482ea17ba08db4b1410561cee39d8c9ea2c0fc7b2a995c9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/FR10S1713248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810a06c2cd68e53f0fcbf7056a55ed746e8eddfa89982822fc0f213491f75a96. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR10S1713250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2d8305704d8298c147fde77443d4573bfe9dfec4b44b5ce94a060da3ae7895. 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/FR10S1713253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8577aa360f84e02a08b79197aac5489639127dd1577140549621a6bff94af1e5. 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/FR6V81532661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf138dab4768e91bd61f1f19a0f42e4f2e56000d19f6ad11aaef749e972ee51. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR6V81532663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a56bfa8afb7977880ad584a55fa7fe3ada28d197be9bb40436a4951084212. 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/FR6V81532664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0257b542fe671926892b5e50452eea5bb81f5eb55501b83c4bd12db3dd19dd51. 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/FR6V81532665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648c27ec9dc510a5f3c6ac5a47bcae25f7d41f0f5861ac3054af0b516f067c9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR6V81532669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6345e1cbedafe1df96378a4544bd1293311d5b9427b4991bad8abc82b7e68f62. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR6V81532670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46cf850c5b668ef5f970a1bdc0b7f6ee58d1765e7f9b16e841fb37dea4d8c76. 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/FR6V81532506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dcbf1d703d4bef368b1b0e1de00f84c8c6deeb7a6ae86f8b9cf8130aaa7a41. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR6V81532507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a167ffd99748ea0c31ca0a397af105861a629a79f69ca54204d45e4783cbe. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/FR6V81532509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd480ab078eb57f5e301720fc9a8c65f4c0767739da7b11c17f2f9976dabb6be. 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/FR6V81532510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce16eae1d6d42105a46b7e42f7ceec1bcc5f1acb9213ae777ed8b47b7d7e28. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FR6V81532512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb1c4a94e0c6fcb203812feabb5a888d0a709e6390ce1403d0cfe945fe5be49. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/FR6V81532513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9abddd4dcb15e42a8faa66a86b01da52d169f7fced5c145bd7c6f297b4ab67d. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/FR6V81532517.
Легенды Русского шансона . Александр Дюмин
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac09eacba727743bd3f681ba2829abb02c8ba4dea6805e2c23157109c242fc4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR6V81530912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8136e589829011cb05c97040f0896af7172cb5d2811e5b758a12d8066d9da3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V81530913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe84ef854d27e3d6fbe0a634afbf6a605e21915a0ba537c5b7e43887f24a7fe. 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/FR6V81530914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe456f0a94e75355634f38ebeaedbbcc499ce3f745fbf4ef7bab76bfa6c862658. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR6V81530923.
50 Greatest Hits (Bol'shaya Kollektsiya Shansona)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7474c375593408f09f49fc4020ca38f55f0793a3248f2fa257336c5f647dac2. 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/FR6V81530979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0930de6ca8f869130a0a1131edc0ebbc41c0151bb5130d7897c970a0e57c2cc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/RUB731511209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f554677f3ac57588c1e8f75abb533e2da9cd86ddc638788158b0ed74f4f296. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/RUB731511211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5eeed4ebc79b3f24895c2697e0c76b094eccf734045da015b2b2f710539604. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FR6V81532508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5aefd325bf9f83c0d8ae99c870dc8e7030558257065c7ea49df419da30c6ce. 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/RUB731503371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a47cbaf06de74eb097bdb04c476a85b65b33bd88d5f48fc4d09babe15dc7e6c. 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/FR6V81530974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835033fe92936f2012ab03d7dbc84ae04fac091719b12e9ec1f4e0498ddd3873. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR6V81530973.