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 0x41ceeaa50d52dd1959762886594b8f961df4e8ddc1fdaef540b45986d9cc754d. 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/e1f84fab-b06c-4831-a61b-e7e5b81fe0fe.json and https://artists.proofprofile.net/proofs/artist/e1f84fab-b06c-4831-a61b-e7e5b81fe0fe.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 0xab90f26d5503479c8edf7879c384ec248d96021c77b93d04c3c5e3b94a0fa2b5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:17:16Z), 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/RUB421600312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220fe11eef758e9a93b87650a949dc3474ac3425bf1b63cd26a4123336792f02. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUB421601530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb234caf5157c67150a3df47f3e7e489a226773aa610d260cc4c3b38ee5e48cc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUB421601535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af0a2c045fda9b1aa342c84e07536193caa8ca4b2d80cbc69a536e0913e913a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUB421701680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ac6ae605ccf6ce3de1228a2ea764a4c901ba9b73d31ec480d42c9178dd85cc. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:32Z), 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/RUB421701681.
Зачем топтать мою любовь (Акустическая версия)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04636741ce18a3aef6d9e2b2d807d13237f8c720e9cb2315e7ef7281d7c01920. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:35:54Z), 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/RUB421900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313393a3a361ece075094d10df58e481aff9ded244a36f03ec52c35a6a64b4f7. 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/RUB422500644.
Вечно молодой (LAB с Антоном Беляевым) [Live at YAM Session 2024, Дом Музыки, Москва]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9218c3a476d5f64a2584e2d4c421d556e5efa01bed724bfe91fe7f17ced7886. 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/RUB422501322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cf8782c1faeca6453ef26f8dfa4bf88701ec9d45f11c421a469557842de0d1. 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/RUB422501980.