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 0xb47a1594247882d36531494a681c3e9bc40a745e409bda7b6dfbcd764c2e8af6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16dd91cd-0fbb-49e6-8ada-3629b3007316.json and https://artists.proofprofile.net/proofs/artist/16dd91cd-0fbb-49e6-8ada-3629b3007316.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 0xaba4ba6c91617b1c5ec28a86f6035ef1b1a310a5649926b8797d8c90f97f82b1. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR2X41893104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5349f2e2ff82f54813b5db8459471aa933faf504a148bceed68981666240d3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR2X41893106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a202ad4c7f2b44bc7644e9cfb881997df23b4a92af7d98b98758266840e260c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR59R1927048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382d69dabf704ece3a6b35e9ad5393472433a156193e164ff4a2bd02094ecbc5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:09Z), 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/FR59R1927051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd613e1c9b04f794cadc4ca807af4c5693a1a34dc684297e3eb87e625f6de8585. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FR59R1927052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1855e5319802793908c19f2e1f5d09ce4a7141b0ec5c333f26a1653695931568. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR59R1927053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441f110e9dc4a1bf137fb5f2f79b499cba9857067d7510084c0f75c1de987002. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:10Z), 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/FRX282052082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd842fc50156195efff84efcfa7d1e3fd5e40bbb48ccd20a21a8d466ac2b41011. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FRX282052084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e4f06cffa50e83db1ba92525080d0dcc371a5bfc306b3e0624e4e6f34e166. 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/FRX282052085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f6da017ce2e547de92b72da05cbe40076ef1bef0f1416ed88fbb82880af4fd. 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/FRX282052087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13dc8cb006f92d987e0cc35d93e8799aec5895112bbe5b7953c58f8730bc8b1. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:57Z), 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/FRX282052089.
Девушки из высшего общества (Cover) [Из сериала "Сёстры"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352ee428559a981847e87bad32c46aa84f17af08c348b44d21edd52145456922. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/RUB422104294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5132f66da1dadaa8dc3e6e1318382e89ae4fcaca7851d67324e0bfea04373a10. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRX872277055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95abbca69d39914c4f5806191603ad4d6e7e27f9d6d4468a825c94c4eada5e04. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRX872277057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498ff6f1af39234f0d121428e25381f382f90a87508be94aba4333e950ff6098. 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/RUUM71901022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e943d799588ff44875ffbda48925ffed36a8ca665dcecf4f4ebde8f2600d37d. 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/FR10S2243488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0c71eb7df6899d82ee15c7e0cb503488c02d07f2b5ac8d51237258f3ef06d3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/RUA1D2245619.
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