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 0xf258e905eed9cfca85e635f1a1256c72d0b13028392159707dfa31495401ecf1. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/933cf55d-8c50-429e-a09a-d3839fa8c0aa.json and https://artists.proofprofile.net/proofs/artist/933cf55d-8c50-429e-a09a-d3839fa8c0aa.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 0xe8590b86ec3b689a1d377d8f3085570fc18ad2802734a6dfe8e5969f202c11d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA371400545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7664949597e0cc1f07eea73b69ac6116accb36d93f666fd6b19a62cbd14d500. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA371400542.
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
Russian Light Songs, Vol. 3: Recordings 1930 - 1960
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8300b4d967fe375864ab06dfc2e696a3f1012ed90fcb5ca66a4886d1afb5899e. 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/GRHR11078602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76429648cb6ddf20c23fb048b256866f8118764e1d458913c70f601b112cbf18. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GRHR11078611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd3c6c549fc9d61a3f9aa8f5974056a2d9ce4e1a763f10e445ad154bb5acc84. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GRHR11078615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd81723307eea8f9ac582d1783b387d6890b4d98fc4d3c5b73f38eb8d5101d18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GRHR11078617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a6703d428bf793edd537d0f4334b5b490c6bfbcde60d9fada6ff61562a527. 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/USA371401238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4019464f41c6b2e468ff6736f36c9966bee3e96007c984c8dfe22ccbf85f83. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA371401252.
Russian Light Songs, Vol. 5: Recordings 1930 - 1960
Russian Light Songs, Vol. 6: Recordings 1930 - 1960
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17860421cdd72ea6f84bf85e8e6d640ed530a5c79f6f6b4e555a8f392b83cf0. 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/GRHR11078906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32da7b247e7ed10ea8ebf179439aefa372a6ebffd09aede256f017bf537dc216. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GRHR11078913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963b2403839faa815b643d0d71fee1bb78d71b04ec009f11fc8c1395e2b6889c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GRHR11078918.
Russian Light Songs, Vol. 4: Recordings 1930 - 1960
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9838035279dedd81eca61885271975adfecee7b700ef037981e1f449a6024679. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GRHR11078709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201d8cd5ce3f7789b5d0b5faa4e3b1411402db57cfd313024d28d6ec4e0abaae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7281449968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bcb8b44d4de1c13e444b133a16d4d8ccf0723a6ed13b7e0b43632cca87bb15. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA371401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77798b991c426737f776eadd26b20d9f45f08e5ff982860a7bcc4f6ea117bbba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA371401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dea88e74a1e0c0ecb2b64aba2242496d3623782f6a058ea3d190537642cd68. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRS182110659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d34059a76ffe0ba6bd335586ecade5aa89a09220aae85ec8e1450289c9aea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRS182110662.
Шедевры русской эстрады. Мама, я жулика люблю
Шедевры русской эстрады. Средь шумного бала