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 0xcc9760c9a3ad6830aaef4e618240ad9ef94bfef97ade48c292ebc96968716128. 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/0446e0eb-e0c0-45cb-8332-62b28c5f32a4.json and https://artists.proofprofile.net/proofs/artist/0446e0eb-e0c0-45cb-8332-62b28c5f32a4.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 0x17baefcd434b6ac62dddbc362cb29ceca78e8f9a863116ab18338166100f4ed0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V81592199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7eaeac3e7cb3f2ce140cae6b49fe9e6f415525413e413cf291603f21d3e7f9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:29Z), 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/RUB421401561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9c4c7d1d262bbdde240ff22949e3d0044ecd532f9d84040ad954826ab0da9c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:38Z), 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/RUA591800915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412cb660f5b872ec2d5e0eda1fba88d89c2ebba5947f1f8248a3c90f6d008509. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/RUB421401571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40a6733341546b6b022013a4e216982d3187f172539a7c7c572aff77043a044. 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/RUB421401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae49c6fe2154cc1ff967b7b30b30e1c4c9aad0c1326330984b60e1cd16e2cd07. 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/RUB421401607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000201f414580a5c8b3803a5d4282e9fd7bb6b25fdf32810aa9c956ec8c1ef48. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:19Z), 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/RUB421600698.
С любимыми не расставайтесь (Из к/ф "Ёлки 5")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaa381aa914a71c298e4582bbfaacf758441ea2920b70d3a40a71cb70c1ca47. 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/RUB421800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb96bb87f0bbe3b4ba9001360816e66d600adfa960a84c2f84b06ad1cb53498. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/RUB421800565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e96a5b90f5fda36e0bbf8fe4b41729b5fb816505bafdcbd56895bf83743eaf1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUA591801450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a192a1e37aa903c04586c7abde7a2b954d319a9d9f1c7b299469eb581ee6a15. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA591900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b03291e39e7cf9ef66efd8059db712fa4411746b08b0188c244d67b9eae3b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:58Z), 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/QM4TW2013790.
Времена не выбрать (Из т/с "Гости из прошлого")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54109cd34d202f3117b809ea8ba77432a31e327f63b8fd1193c1d6bdc16c1ac. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUB422002147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde95cd5c631d6a6b9b7b84a70f5031b7e0fc13ea672c003c6767189f4519aca2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/RUB422100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc33f58b3149f7255a94c46f607427047183c19e8b0a4e9ee7a359fb362e565. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/RUB422103442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3003ed8a9bd5bdf73c7c06af8bd75b195a3052a07c6134e93f75b5f68a8342cc. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/RUB422103445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65838a199516e0a38696e59f76a7cab689b333234fd5f55a094560688b56acfa. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUB422103167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a005b5f4c31570b8fd2dde31483e7a8658d05d10bbec2c80f74db92da729fed. 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/RUB422001845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db1715243c0a7dea16bd6aa56419052311935ba2f101a7b5e76cc5dad3a6a3e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUB422202723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cf729e05e1847a4aea8d149c6f32dd4ea5ea3cf03f7f0817bd36c7cfd0c292. 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/QMFMF2000995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451d78765d78d44198d1284fd675802b3e446fe6d73f0c6fca5fae20cb343627. 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/FRX452164095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cd16405617be4e664295997f0048e086ca1d7fec8f48ec7c877f2ce30b64e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/RUB422102320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830eab6311fa9058961ff19899c91bb445ccaf5921afef3be7cd3d22116f5f8e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:45:41Z), 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/QMFMF2001002.
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 0xc674a3266ba81b25d2ca00696d1c83a7f8954e8170c61f54f60123bae5f00b12. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZGLS1978028.