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 0x650dff5bf0f480f730533430976c2a6506d4cece86d8b59c59967bfe8dad5ff7. 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/6a387f02-7c05-4ca0-a8b3-16a430d270f9.json and https://artists.proofprofile.net/proofs/artist/6a387f02-7c05-4ca0-a8b3-16a430d270f9.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 0x8d441bdabf2a5f5a072bf9d126e3d36cfb2e37bb0c0655eac1403c3ef6bd3d1e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUB310802806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754870455cb95ac8e81b454d8398b3cac1154b78c53001c5634007b49ba9581d. 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/RUB310802808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f78279f66c9d994f06e0dc67fa6abeaca6f86280a370ee5f7f63186eee12b27. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/RUB312008101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dc12bebb21592b28d93dca14446d782b379c8012885eaf0b4ee08802de31dd. 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/RUB312313502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8ff1bb4c6ff79149232e1381409edde445997b649fcb80359b4b039be9ca2e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/RUB312313503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe255753022ad565446bc93e5875eb792ab433fa62cda4d134b278d6edd36d8b. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/RUB312313504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9804e18a2839e6406572fb8d549b77aaedaf093bf1c992bd76f48578604117e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/RUB312313505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480bc72a36f70f6a0c5ac5fc32a154695ae3446c8379e814e4e919877d08e2f. 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/RUB312313506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349c1221aca7364364c27af72a1f87c8d95f63522a0d62f5ef6339068aa9118c. 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/RUB312313507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fbcd23573b7dfe10df2d9cea57af74083581e9bbfefa0003e02d8abb34d75d. 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/RUB312313509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e160d91674639d08b5938bf43efce337a76a95b1dfe202f83d5f056a67159b. 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/RUB312313515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87905e18f0be9b263372b2243e2f5942b70f583acdb1964eb4ae1e34a4ee99f9. 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/RUB312313517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e1e731682b0437cf28d27bf75a97e18b06493674a84eaef38bb57a01038438. 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/RUB312303101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba63943aa1372b6f9125dd686a447d7c3eb05b9cd1fd2ed272e308999afef24. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/RUB312308203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1998b20c4afee7b5eae6c75dd755d65c7d8667abdf3c689c34b092eca5cc7f9c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/RUB312308204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1764807864e90e11bd1e5f2b3a0eb2ad51aa9f360b8c543603db059fa675e36. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/RUB312308207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a70ad565292f391b619e8a7f54086a79e0febc9acaf12d2cabd6e3436187bbc. 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/RUB312308208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70abc9787bb69fe42152b1c34968dbc98a71cd226b9df34af4f6db4869c8229. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/RUB312313402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a16c41e0458cc26b9d95145492ecbf8fdbdcceec75b49d918992164eeb4eed5. 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/RUB312313406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446800b12b498d370139373b0c21d3e8eacbb5465f7126301a19ef4ce54b64e6. 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/RUB312313407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f6a889fcb5fc7d4dd4195072474980694522dc0e83534548af9bd694b7cbb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUB312313408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf0645e97b944550759935f9511078f7d5358de7ce40d58e53d9cfb6672f428. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/RUB312313409.
Солнце взойдет («Творчество в пустоте», 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3746628d2eef9e7b055398f30255387f244f66e5a76d80d131b1524ae0d9704f. 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/RUB312313410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d78a742ae82726224b238bdbd7ee63d62838981484bc485c91c82e8566251b9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/RUB312313411.
В раю одиноко… («Творчество в пустоте-2», 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d0406d7b0835dbfa22f1a6e21831660b8e10ef8025f26027f852e2971b041d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/RUB312313412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48daf81d1be43725ea1b228101e26ed8b936de50f7d440572d796fc2c0eb2a91. 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/RUB312313413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15674d4b0469a401ec34c92c78c599c36efbb9b945eddd563cf5bf73927a23d1. 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/RUB312313414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f8322c209d28e5e111bb05114774e862016ce574d5ae2afb5d2c6e5c3d949f. 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/RUB312313415.
В бой («Пропавший без вести», 2005) [Remastering 2025]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63379595e7a11328df2c14994e1b9588bc94f98636a36bda25d46ad41a8921a. 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/RUB312520510.
Любовь не пропала («Галя ходи», 2018) [Remastering 2025]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff7402d5189d60ff6f863322ecc11220f3c1c5b2cfd1122f89bb411181ddec. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUB312520513.
Чёрный пёс Петербург («Чёрный пёс Петербург», 1994) [Remastering 2025]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da4ef4ed34dde525f4387390909f1d81288158d52f0a8dbba0898161dca75cb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUB312520514.
Не стреляй («Я получил эту роль», 1988) [Remastering 2025]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8621ef6a72e710959e81cb6e7902671db861bd029cc3c47c959d60bafdc8b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUB312520515.
Любовь («Любовь», 1996) [Remastering 2025]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbcea45bf0bdc77ad1c21b08ce2a45732b81728830bef14338ddc5e8a0ee998. 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/RUB312520516.
Песня Кэрролла из сказки «Алиса в стране чудес»
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533ec1f9cf568edad93bbee64c85301a4665709f8b4cbb52ad5a0155253566a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/RUB312309101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b2633b34ed930c17ac75233a39e37d41154e2e7d62d5117d2ae25c88f9bd9d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/RUB312309114.