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 0x2ef3b59457cf16862a43540cdf08bb14e487d9123f4ab992f1762e16efe9982d. 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/38fb60b4-36ee-4aba-838a-ad7509466e25.json and https://artists.proofprofile.net/proofs/artist/38fb60b4-36ee-4aba-838a-ad7509466e25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Balada Tou Maouthaouzen + 6 Tragoudia (Remastered)
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 0x3a88146487b1ec6ccb880aaddab9aa1e451828a363e7caaf8b7a7bc85ccfa6a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRE018200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492228e6bdf3c8b85210277ab59201a61dc9117c2910fd557c1f9ae3756be275. 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/GRE018200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f6423f377fb9a29b2abf0f1cb90d292343e4814ac543b5011d8e7a75727a02. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRE018200369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031bbd3677412b526351295e20c102a4fec172791124da50d899af04b6b72594. 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/GRE018200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5467abced4fded70093e3db8f6629ef824f443242bdb0ca1ed52c302dc8d0b18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRE018200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca531d67dc44b516f622b6a9d99967f4c2ed52dae2fc47f1cf86aec652288160. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRE018200372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e8cb7a7c50efb8f667e35953ec7e04281b64832e39a582c7ff64d0aa9ae03. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GRE018200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca9f670e43c997abba33c91d9acf8df9279044d29ed82ff5632982b6fdc13e8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GRE018200374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2bc27626c54109626dd34fc486068086e2c229aae860d9d2e49a9a3d0ddf2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRE018200375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993933a7fc3f3033847834a9fb21ba1de999f74d5f3f832f2e89978b53cdd804. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:48Z), 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/GRE018200379.
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 0x45a9a1a8b7ad36492742005a3ad2a545662bbc8a10b2fdd20906c414fedc9b44. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GRE018200376.
Adra Mou Pai - O Klama I Jineka U Emigrantu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846e598eba99a4a11f105d0c7d3306cdaf85cf46e2f48e6c162d342f66f5bec7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:04:37Z), 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/GRE017700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3229cad3c7a6932091f3640d87af5d5db9f22afa18a9be1256ae1ad9457da046. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GRE017700604.
Tragoudia Diamartirias Apo Olo Ton Kosmo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d08e1f73f7c5d4c669789c598072597bfb1dd75bb2348f660833b187329b177. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GRE016600063.
40 Hronia Maria Faradouri - 80 Megales Erminies - Ihografisis 1965 - 2000
I Maria Faradouri Tragouda Brecht Weill & Eisler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cf4155faaf5dc3da4625fd9f0c86a82209c5e02b65c62b98c50ecfe159fa05. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USA371534210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5e31319e809bbe0d5b22dabd8ae102eb31a533fcf7929c383e57fc6273cd55. 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/UK9FB2400001.