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 0xcfda3a06d47dab911c92b3967b2ea056301c4b212cd5a245b45b0b307db6f9fc. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd20fab9-7050-4208-8f5e-a4687f56b52d.json and https://artists.proofprofile.net/proofs/artist/fd20fab9-7050-4208-8f5e-a4687f56b52d.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 0x02cffe2d156bcb05de92887378f1c75028b988927b78b1c7be0ee5f8e97367a1. 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/RUA3R2059132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e6dc79449ae76d597b3dc2bba0001436476cb84b62ee9c5d52402e315e93b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/RUA3R2059129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4009b832087e5f7e385a6109f035669c4023e16a0e8bd9a866f15597a0ed7bb. 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/RUA3R2059135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd697d9ba477423ce90e5d8bbd271bfd95f2e8e1ac0c58c43c3d101fbc72e537. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA3R2059133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded2d7f088cb5b02fcaebd34a325cd5036396e52584abc9eb29e69ec9d1838e. 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/RUA3R2059136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fb2a17b91224708c4c8489978ac2eb058d2220c8016c4084838d739f4599e2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA3R2076385.
Les Femmes De Tourgueniev (Трибьют «Центру»)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259e0b789946db4bcbc101732e2d7dd220909a090c1cf8606f0fc34cb0c19c07. 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/QZNJX2110613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8402163f7460da5dcd8a2d6e2e3fe6216291d9a37955470f6e0a487af8f55fe2. 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/QZNJX2110614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3721a7524b3b864e4035b7114d70557521febb04336ef3a63098511ff7c04170. 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/QZNJX2110615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0df732db6f282a794708fa8312f3b6a72e9a40d0ae64384e8882cfcb366f224. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJX2110617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1111378e1c3a1a25b46ed43c7702d98d0db9f9d7594b47634fff370d2d264e. 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/QZNJX2110618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b05829b37440b2c30dfe18832143226cab2575bc49896580ed16a8f345b7c55. 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/QZNJX2110620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d79e2e878e7964d27d6b0f27bea6ea9c0ede8121a4b25eb2c87379d01a1ccb4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJX2110622.
Live at Supertramp Garage Tbilisi 2024 (live at Tbilisi 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e2da055b00e5de8f1f5d58c8f786b90b75ad309db178303a9c0c2b15ce49b3. 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/QZNJX2020133.