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 0x2626c06f0c49b5262a4c2d26f70ae101a687b14ff2cc6a53472f25041a2cd66f. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1427c73d-8e4b-47d5-8e6d-2a09afa127d7.json and https://artists.proofprofile.net/proofs/artist/1427c73d-8e4b-47d5-8e6d-2a09afa127d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Es Gisher Lusnyak Gisher (This Night, Moonlight Night)
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 0xd97bcd52ca0332eaf6e2f8951d2e3e93f51ed57333847955838758ee964aa90f. 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/USTC21010024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc8608ee5a506d063264dc6c713c8dd2b660a4a598319459e7d761fe3042904. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USTC21010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817ebc68e50a553f49bf9b54ea5555131b7c286507988581e82a0aaea0eac35a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USTC21010026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad601445abde09055f1cd4e05a68495e38bf80aac8d6ad33387cf0475981ba62. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USTC21010027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95b7a603b83c38f39b4bcef5e3bfe8f0568c21a2cb2d6853003df2d07d17851. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USTC21010028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661b93e48031341a129c9450ab3af1876afc7e3e2e61a79b13c44f37db39d428. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC21010029.
Hov Arek Sarer Jan (Cool Me, Dear Mountains)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06783a9405e17555399c58c12703e2cdb290478b5e694d1d4668922c0c12e7d6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC21010030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74ad0b57c23b1ded330790d5d49387a5f2166782c2f9d82c411dd472e293c3b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USTC21010031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907964a1f23a24494dcd792be13d75ddf3d2d72351a08b6d9c1908bd9ea6f347. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC21010032.
Mayr Arax Aperov (On the Banks of the River Arakas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5b485ecc5619722d0c13c4641d88575aa910b8e07c43d657e3870469028553. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USTC21010033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6a053521d0eb4131af1eaed66d50a01739a86012da93805a7e913a857f669f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC21010034.
Chinar es (You Are Like A Sycamore Tree)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aecc3552c72b312703cda6ed67ff141df7e79c908251c32c62db2226b96b604. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC21010035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98c3468b8bf55e95c34ebff5915db1189c3dbcb07e958a06c04906023f93e4e. 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/USTC21010036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdcf1f7f3e5e22791537ac7519432f96ec35d1ce17b103037e8c46e512978b6. 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/USTC21010037.
Pepo (Pepo) - Solo Arshak Sahakyan, Hovhannes Margaryan, Armen Stepanyan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe502baa9fa66a42bb9c3907ccd473c018263902fc0b8ab079444f059db2386bb. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USTC21010038.