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 0x8198ed03533cc7a4cba57974bfe951a497ae72866e5e11183624c18facde5338. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e109e9f3-222a-4f9a-995c-0316b6a462d2.json and https://artists.proofprofile.net/proofs/artist/e109e9f3-222a-4f9a-995c-0316b6a462d2.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 0x62ba1651c79e0df7652ff883f8c00863811ef5220a5a49083547e9be5a39bd2f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRW019300098.
Trampala Stis Taratses Etimoropon Spition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cc6e9998055f5b6926487655bf5c97e6ec3a6dcfaea86965294f8349b909bd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19800389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4990d222b0755b6eff34dd72635d7c0d658b059076ccf80b40f3d3693f40c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRL010900585.
Erhontai Oi Anthropoi (Live at Kyttaro 2 Nov 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9d36178fdce317a741ab626f3ccd1e7045b635db1135dc9614956bb5ad6b9d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:12:18Z), 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/QM6N22385515.
San Figoun Oi Psihes / An Den Orizis Esena
Emena Oi Filoi Mou (Stin Katerina...) [Live]