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 0x32c36292eece885cec30e494f01b20e6acc2a28ddb948795dc5f4888a2d1c74c. 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/fe3449d9-4213-413d-b040-40566ea654a1.json and https://artists.proofprofile.net/proofs/artist/fe3449d9-4213-413d-b040-40566ea654a1.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 0x592926ac0b98d3eb5f9d0bd61f1ccec6449f1c97b5efed99711948705b46c57f. 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/RUB732006620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4531e0143a2e79af00880bf1ba773b344bf2d9aeb92ee2a14ae191f80bf6e6a5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:34Z), 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/RUB421308420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14214f78344dc65f545294a4e426137671408dce56078b11cb9f5caf62d1360. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:58Z), 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/RUB421308424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb9d93b0e8461195f906c0b07613e38dd9bb93eeaa721313da462265bca6de. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:45:25Z), 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/RUB421308441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b5eb0458c0bfe4e94bd9169aedda68b75a28c1f3b1a305d7bf9dc1d3acf529. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUB421308444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f733018aff9620f281def83b9fd96f8b85b9cce50050d8f7ff66a5281b72e4c. 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/RUB731432375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78854e3a84c6813da0db58611b38032b55bbbf5ef0cc6abe1530674afcfbb5c3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/RUB731518991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52e5dd16ecbce3bd9ccbb658ef2998497105130971ef53d1446de3e615a00e. 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/RUB732007220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc1420671442044e4e5fda077c93d58632e2fb6d5bfa0553c8751cb2683513a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/RUB732039169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56d92b00f8d2afddfae40868ce89006a2840588373cb489ecbda45caaea0e50. 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/RUA1D2343342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10a23bead1e1839276c5aa22a1e961c131a60d17c24ba804ed3f62647e6a62c. 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/RUA1D2343348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e997c453afe974b697b1f84a72357407769cf4416eeba188ef253b63c9a852c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:10Z), 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/RUA1D2343352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7f66f489c7e9484cbe8e677ca2c2c9d56786cd7c7340081cf485fb47fa040. 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/RUA1D2343356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c33de6f4e2dacb0c7cc1ad7a54c6fd34651b2930154bd651264814a4069f7d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUAGT2320200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d91e376add2c03f69cc289fcbd62f5c3e7205a3aea872e0b847f4fbc073ba9. 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/RUAGT2366165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69838f329b2921ff381b4e4ce651717f971a1a5f1c208ad772141d785078c5b. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/RUB732065258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c984ffe2ced8d08c310e3e266e0c8700304d7a00ceaed568964f68662b0572. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/RUB731301242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68204723bc53d926f22d233e8ec5c409ab17eda3dc554c7ef90fadbb4292c1fa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUAGV2410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39daf02cb296a78b67b8711bdd85e400dabda8151b3d1f618f7be8682130ebc. 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/RUACR2402272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35b99fdc283e40ec0761b3aea733d3e1f679ed6d8f23cacca46489f6df07a3d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/RUACR2402629.
Прерванный полёт (Песни Владимира Высоцкого)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6773f371e0e61e281825bf88619851a7fc505fe4ac28a9e21322ce92239b5226. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/RUB732000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0c26d6c70a59b538b19dad518413b5e74bcced2cb3d5f2a1ea0a4d223b6e34. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:39:44Z), 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/RUB732008467.