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 0x185580fb0819b9e704dc8d596a7174da821e5e02eb1ef7ad3ade65a28675abe4. 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/f2df457b-c5a6-480f-86ae-2e7248260b07.json and https://artists.proofprofile.net/proofs/artist/f2df457b-c5a6-480f-86ae-2e7248260b07.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 0x92c0d0f01ac5244958eb6a80cef876b5e9d7bbf5a5b270e7bcf0980f3e95d21f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/RUB732056260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e5c6b455eb18c3a27518b3aca1041a7e5fe5bc60b8d552f002bf760bb5c0c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/RUB732056264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d150d2555114aed7c3380e55b26f52404682e816c6b969b17d4ebaa210aa9ee. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/RUB732056268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce32976fdcf4f0b2bf45c6bbc172a549a7fc8d3e6fe6366a9e9b65c121712f07. 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/RUB732056282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b28ce69d447ba4b08cc4159f50c819f1b5cb1f8d9d0633265c1325e892ebe4e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBLPF0140107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3450a2152172a68361eb35b1bbbaaa05d64f0b4ab4160face4553068bb796e86. 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/GBLPF0140109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2469c9e681e9046541b65e3e211a091cda1dabe990e54f3572e7409e5a607. 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/GBLPF0140110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fc2e0ee1c01e7cb6abc9f7a1dc7fbefdb43a2b9a2fadab1dc51d3e38475347. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLPF0140112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b6756d9c56564ffc7cb30d85cad4d87319b1d31f3d7dab378dc96ab9b60f83. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBLPF0140116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f90b03c10c5c27480b1e2b9db231a7c0a16d2a7347312b5a5cfe8e25e7764f0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUB732056290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecdc8392c49c9a937d27c9acdf779f8e57f1c4411d9247bd9357f556e105571. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUB732056292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72df52ce28603a5d58b6b7eea2043c10e5e274d26220cd5476740d265915210d. 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/RUB732057343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df1e1b08c5969ae8cf8de8dec936da4b9832ea4f112bafec908b50d054295d6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUB732056304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39981c53c50bc30b3fc8b0e0542a33864551336c4a6740f603f6f3924c21f764. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/RUB732056310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b826718d6f6b4c702c1dd2cc0a1fdfd6623cded45a7e8307e5e7804a5ff7859. 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/RUB732056324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e8447874ebc1da40d4993a2c6fbeb2df72b150fd52639289ede11050f5c120. 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/RUB732056330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b02cf53649b91cb33dcc777cb9c7eb087d755f164509cfd09c4f1e7b88b5747. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/RUB732056308.
Лирическая (Здесь лапы у елей дрожат на весу)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da63446518b7135188bedf02596f4dd7fc3e8e09196402142734ccc751f4f7. 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/RUB732056394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a3428e5b507d743f79e8d7a7fd75be4682402332e90b6ad1a2142e0cd8f95d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/RUB732056406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0c6406f7af69ce77445d929570e291e0cf013fcc9a9e4febab21bbe4e02eb3. 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/RUB732056396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f6c1643cc33605df3c7d3a9800345a65e0511440c4537fa06d14c26c65fd7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/RUB732056248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69155c814f443a1cbf24cdda085f415e3733cd48ff33a122c4f16d568a8c4d5. 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/RUB732056320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5eb4ff46e0e7b4a6b5b88465c50194519f08142ca032d8961801f70d2e509d. 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/RUB732073498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a397df2bc3cccd80e715008c9ab85f8b4dff24a50f0829d28f66eb5a299866. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/RUB732080661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a922e25701af026fcd2181d0b95f469a9740f29d053847356bfbe91b7c0bdd6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/RUB732082671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7e786049f337b84c936ae8d94f004174eb92a117b76a98673aac0f302bf1a8. 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/RUB732086621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e002bfc8b86606436e4812479bfc27799bc2a1f8b694f4bd84ce2cdb313fe9b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/RUB732083460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe115cb837ba432714eb5a4124b40c5aed6a30e13661f66829518dfbbd4f7ef63. 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/RUB732502153.