Christos Papadopoulos (; born May 19, 1982) is a Greek swimmer, who specialized in breaststroke events. Papadopoulos qualified for the men's 100 m breaststroke at the 2004 Summer Olympics in Athens, r
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 0xaa18abea7b0bbf32e2299c9b357671650479fe787fa1b4e1c4445a7980342b05. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee6605ac-4923-40f6-8656-8c5ebae2bef9.json and https://artists.proofprofile.net/proofs/artist/ee6605ac-4923-40f6-8656-8c5ebae2bef9.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 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 0x0645565010adadf7dc8336153f100aa2614088f1e1251f9abccf0bb81b8f0ca3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GRFM10100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe177505ebbb8160b3d766ab894b888660b43e6b81fc6498516a919cefba927da. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GRFM10100891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb628c58b4b083d19475b6163187ba25b6a3782dd29a5ee07d7d62d89bcf60059. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRE010400866.
O Hristos Papadopoulos Tragouda Grigori Bithikotsi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b12aa8ad75911226d62a251198024a0842b20fd3024affbc9f3cc2dafcc60c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GRFM14020202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d524e9387074adc9ac02e686199f81a26baaea345a514bd17ad931207db0233. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRFM14020203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b672e03cb8228ac067fb133e9855ba030e53f653149e1c7df585f20f0cd932b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GRFM14020207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3e214d19c2f0bd1c7f2f808f0c2d04c06c095f8c50c4a3af669b6e75a40a0c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRFM14020208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e70d2bacabe9b343dc3ac02a91f5b089a72665fa2af48490f4ceabfb57ef4ef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRFM14061702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c0982cea3bad1991a7f3e8c7cdc10db923c09a50f8c5b1b72fb5268630ce6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRFM14061703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c9c044ab7e4d3a85a8123d918344d2a4c2428ce89f0f253ae70902cd574b1. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/GRFM14061705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc41b4fde62ee23077994fa7ba53df4a672e01bc3df2714570eb839a2d379b9. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GRFM14061709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79513785175b37427059faccf5872e47914094764254c79fd267c4462806beed. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GRFM14061710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1585ddd18280c3d7eaad42f9268fb56b640f6db85a79c5528b0db02e10dceb8f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRFM14061714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a8d47dea84257d9113157f4e4e18cd72b10025c549ae4352324ed2a00c5dc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRFM11600940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5611f736926d06fff9aa55777fe98e964778e614ccbd3c4a06e740aea9d465c0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRFM11600958.
5 Megales Epitihies Tou Manoli Hioti Live
8 Megales Epitihies Tis Ritas Sakellariou
Tin Patrida M' Ehasa: 15 Tragoudia Gia Ton Pontiako Ellinismo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b8b9fa4a0e629958ace54f60797895cd48e21928fd926b3ea6684c1e572e39. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRFM12000947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415913b87f5099a5ba6ea5bf5917a94b6d8a81edca4f623dd20014933421be20. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRFM12000952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3bcb589bc962a8dc218eb20abcf4868edc5a321cc5bc6bb1b6001f048c5aa2. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GRFM12000547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c95eea4d8b41cc444ce2a75f19c9c04fad1344a3dff75a53cfa7081030d5581. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GRFM12100433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c9e265f7c5a22a775505c3c30dffd1d56d7207187573e6ade937550ac7200b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z2143166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5f3f875dba7e10a586f22029c5a3940c14482e5ba870f59a05561397a95dc7. 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/GRFM19900446.