Michail "Mikis" Theodorakis ( ; 29 July 1925 – 2 September 2021) was a Greek composer and lyricist credited with over 1,000 works.Athensnews Interview: Theodorakis' call to arms Famous composer Theodo
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 0x89d9d4d92fbad1c94af9686d0029107d0a8eaf9d995b567bace5862dd7d28610. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dd72f26-b4cc-4ba3-be61-43972f6c8285.json and https://artists.proofprofile.net/proofs/artist/3dd72f26-b4cc-4ba3-be61-43972f6c8285.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Theodorakis: Rhapsody for Cello & Orchestra, Rhapsody for Guitar and Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e6ef6d03de1a259075794ec0fc04cb6556480cc0ba03b09922c97348060f5. 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/GRFM12400434.
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 0x0c322974fcc372ac88f03057f967231074214e61162cb27713ac50855a006e2b. 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/GRFM12400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6ca6932288e149e92b9e82714e84fc980e3f45a84bdd52673fd7c0be2d9d5e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GRFM12400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991a8c1e51be9009f008e1d7e6c8a8ab454bb19842cd178e157978d7c2accc5. 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/GRFM12400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a34254b9fee47dee523c8d615c1f4ecadd20ac8aa2b4b2e311e149403c0832d. 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/GRFM12400437.
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 0xf8e6012434c11d8c1d57ca7c261252e0cf9a0e86924789018938468bb4fb4988. 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/GBCJG0900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea530cddb244795fecfa78b7418f68f37a4a69a89af55586a9d22839d6789bd. 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/GBCJG0900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e46a2f09032200b30af041b1d06fad9e945929e868998a20048f1073a5b07. 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/GBCJG0900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1488385be54b62a6c7e46abf194d31a0409a8b9ef904942b2a5fda5ab6ebc93d. 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/GBCJG0900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a3b71ca9ed3bdab5cf02b6593b8f6a55d40fa1ef7fd97c7ac109e5e6d1da9e. 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/GBCJG0900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070cebeeff2a5c43c5d4e42c9988dfcffa50bbd9d5ed94f853a4c0437572a87. 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/GBCJG0900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233007fced19453a461171a067c1e3afd4731ac9521b86ec32e629b527a9b1f6. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBCJG0900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55c9c8b0be3b3496e22d410ce453d2bf6d6c1c1c94a0b3ada1e2b4863f9f860. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBCJG0900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd0a9a316515e62f157644094cf8f95d8faf2da5e3b0c0f2ba9b885a7fc4eaa. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX282488444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1abacd4099f3eccd21ed70660abd7bc8e2eb261f8cb025d573fafc23ba0d3e1. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FRX282488435.