{"copyright_id":"0x7b071fbbb9291199b4bda1080ac86e3736abd40ec839e3f20bd5b2ed96b46ded","name":"Slavyanka Men's Chorus","registered_at":"2026-06-17T05:19:04Z","symbol":"NIM1293213","token_address":"0x0ad47cb9d7d15dc0b8bf161dbd8af7d3be7a3921","type":"artist","uuid":"71fe7bfc-9f36-4a21-aeff-ebd4ddec31c4"}
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 0x7b071fbbb9291199b4bda1080ac86e3736abd40ec839e3f20bd5b2ed96b46ded. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71fe7bfc-9f36-4a21-aeff-ebd4ddec31c4.json and https://artists.proofprofile.net/proofs/artist/71fe7bfc-9f36-4a21-aeff-ebd4ddec31c4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xdaaeeb156facffcf6801d7449ba726c65445e28ad9521d53eff7395f119d06f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709801 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe29c4d8b57e4a87d60d4b159938a3ac23b8dc89e303948c4a861faec5d00f4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709802 — a six-check JSON result.
Sye nynye blagoslovitye Gospoda (Behold, Bless the Lord)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83be5e7bf6e8af867f218d5105252e9ccf2cf407a3911dd0eab22a8bdc1b4848. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709803 — a six-check JSON result.
Spasi, Gospodi, lyudi Tvoya (O Lord, Save Thy People)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bb8d7e2c64936e4bf5c003a18e2e59df6ae9085148e4b153c905f6aec5b327. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709804 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faf186bc27989da0660120971ebe1c61670b923d7c5282e67e40397237f6851. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709805 — a six-check JSON result.
Na ryekakh vavilonskikh (By the Rivers of Babylon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fabd78d6b9303835e4bfdacc83c1007252c8b5390fb01e0a70448ef558188a7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709806 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054e8759a33d645e6f6b813ae9186398dbb271f3ba25dedf3f651f9093cc84f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709808 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1e1a658caada5d219568c7c6f9400f4162114d74207c871aa1df4cf8e4fd9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709809 — a six-check JSON result.
Spasyeniye sodyelal (Salvation is Created)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d7fa63fd330ed79ea1beb720532a287cc24dde6f607fa69a6b21a18c5862d3. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709810 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e57e6dd72402ec8afa35f8190c0f22026cf668832eb2bb57d3d965891aec9cb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709811 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f3c6291e7986fab03362adac9b1207398cf26a8c49300e20ad7d53bf4d0922. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709812 — a six-check JSON result.
Pryeidye syen' (The Shadow of the Law Passed Away)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87c50bfc49ea422eac53ae523d0b627d147bf2062448d385be334e719afcf43. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709813 — a six-check JSON result.
Nynye otpushchayeshi (Lord, Now Lettest Thou Thy Servant Depart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a90a9c5c9185ccd4e994114cc3ec35a88149254121ebfa4f84e43f6c71d577. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709814 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731243fd48898ef014eba1c565801b2a137e0663e4d75157e3d8dfc7d43e59d0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709815 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd82a4168609b3c57e4dbf8380610075b054255c03a5fd6a8dcf51662c7f3f16. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709816 — a six-check JSON result.
Slava v vyshnikh (Glory to God in the Highest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5747bfbf0391cd25bff53ce8ca818053373af9e90207b67b6cba6851ec6b5056. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM18709817 — a six-check JSON result.