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 0x4b1377e7b28379aa7c1348a250dd1de72106ee5667d2d05ffe84a4c9f4ff97d9. 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/a8d24c9f-9476-4869-9bf6-3289851f2b7d.json and https://artists.proofprofile.net/proofs/artist/a8d24c9f-9476-4869-9bf6-3289851f2b7d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Ite Pedes Ellinon: Tragoudia Gia Tin Epanastasi Tou '21
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 0x44893697a4985454fc26999486b39af517b2bc8825b75ad9cc22dadb5d317584. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596948 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81773393b537d6c3feb08f05e344f46cd8f99000590181ddb422439500153c82. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596949 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e7cc6cb4aa1d4019f78ee88799dd6bbcb69ca425c4d6bedfed8cbc6bc8f5e7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596950 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b79674426847c14766523f16baed578d09f2bea07d133b146479ff542486ed6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596951 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b8ef0c78dbedda6bf538b935486f04056a37967b4cb4b98a13a21ada41de84. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596952 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee4f5c70a523ab5821f056129562dfaca56f04b5f36449d5a91a3265606a1eb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596953 — a six-check JSON result.
Stin Ellada Prosferoume Tis Astrafteres Loghes Mas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96bfbf0b6a187f21c49e809c34edc5822eda28a67548e3a5ef5e1d875449f6e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596954 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7ab06864208159401f809b007b8e27e9f627cce491887f925ad6460df3a51. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596955 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb835bd573e56b7e9add09c43667e27896829d7b2fd88413719e1983102a9d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596956 — a six-check JSON result.
Filoi Mou Sympatriotai - Emvatirio Ton "Kynigon Tis Anatolis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb93ba83ac840aabf11effc7bc09b7acae8b9f866d832ba14be682907a602be. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596957 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8849455270628df79faa5c18845adfadff768dc241c051cf64d35cd7a41b4cb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596958 — a six-check JSON result.
Ti Karterite Filoi - Heirografo Kalamatas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd47b2d1e3089e59e22ebf4cc9a63c6219833c41e2b9e1c4e3bb686535efc18f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596959 — a six-check JSON result.
O Genneoi Ellines - Heirografo Kalamatas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965a6db1bba6b2be5f9740a9f412d5c8ac6f6f1277177b17481bfe1d4b68a8b5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596960 — a six-check JSON result.
O Ligyron Ke Kopteron Spathi Mou - Heirografo Kalamatas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8626ccb0308c0bd0339d00dce8877f220651465c8998e90c70a25b012164233. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596961 — a six-check JSON result.
Synaptai Ke Troparia - Ekklisiastiki Akolouthia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e76aeb177f637bcc414f1cd784f670bf4c6e7a70b8d9738e5510a1550a8e5d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596962 — a six-check JSON result.
Diati Pleon Den Riptis - Eptanisiako Tragoudi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a47b142f2bc32a833477f17bc378b36bc415fe29b09816e763b6950240b8d3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596963 — a six-check JSON result.
Othen Isthe Ton Ellinon - Eptanisiako Tragoudi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9571e018bac9ee874adffa0e9be810838b0af4f6367986f22fb4fac1818971. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596964 — a six-check JSON result.
Eftase I Lambra Stigmi - Eptanisiako Tragoudi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204dcc420778a8f4baaecadf2e1e51bcc243ea10f6e31d2869211210700e16e8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596965 — a six-check JSON result.
Ola Ta Ethni Polemoun (Ymnos Patriotikos) - Ethnegertirio Asma Riga Feraiou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7d8f89728b230a5edd818683820e0d45c93e30d07f1f116d55e167e9a83c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596966 — a six-check JSON result.
I Elliniki Massaliotis (Defte Paides Ton Ellinon) - Ethnegertirio Asma Riga Feraiou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcded85fd7a29ecc1f39ef6972f1cebe318d0737288d7cfd76670c39a10c998a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596967 — a six-check JSON result.
O Kairos Adelfoi - Ethnegertirio Asma Riga Feraiou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f0d3605e230981586310fb5d2c9bafe12db3396ff37cb3c9962ace4cf8887. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596968 — a six-check JSON result.
O Thourios (Katagrafi D. Soutzos) - Ethnegertirio Asma Riga Feraiou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940bb461d0ebc935e1e1fcb566329f1efb35d3d0bf0e6801074c9ccbac03c154. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596969 — a six-check JSON result.
O Thourios (Katagrafi S. Karas) - Ethnegertirio Asma Riga Feraiou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63118cf6d1525e8c0f9d82f4f15e75359bd0a1be25a9cc050e46bdac3d5b26c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596970 — a six-check JSON result.
O Thourios (Katagrafi K. Artemidis) - Ethnegertirio Asma Riga Feraiou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b13443909fe0f9bd771ad9ae85f2bb3df3006d1dc8071fe418e69fba86f8cd. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596971 — a six-check JSON result.
Defte Ellines Spoudaioi - Fanariotiko Exoteriko Asma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb0d1a37f9cc99517a0cb52fcd521fae21d60d5c972dacc450b0badd1673803. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596972 — a six-check JSON result.
Otan Ellas O Megas Napoleon - Fanariotiko Exoteriko Asma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc5c7cc22ba22b60c06d81099de02f8bba9f6eabe3c43dcaabe413ed258a10. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596973 — a six-check JSON result.
Mavro Poulaki Porhesai (I Polisis Tis Pargas) - Tragoudi Astiko Ke Entechno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066b6a1f8a0c246dd6992fca0dba91f5477f7a3dd975d84e85dd0c12bd85321. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596974 — a six-check JSON result.
Tis Frosynis - Tragoudi Astiko Ke Entechno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d94f6fda20fdafd57188bace087fd1300d43f91b00f7318fd2711e623eb9ca. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371596975 — a six-check JSON result.
Kryfa To Lene Ta Poulia: Paradosiaka Tragoudia Gia Tin Epanastasi Tou '21
Melodies Tis Anatolis: Tragoudia Tis Smyrnis (19os Eonas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eaaac41cfa59b30184c4e02899f1242fca0c6d5633e174ae45aacabc50e8bb. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19700599 — a six-check JSON result.
Melodies d' Orient: Songs of Smyrna (19th Century)
Romeika: Mousikes Katagrafes Apo Ksenous Periigites Ston Elliniko Horo (18os - 19os Eonas)
Greek Enlightenment: Musical Inscriptions By Foreign Travellers to Hellenic Lands
Romeika: Musical Inscriptions By Foreign Travellers To Hellenic Lands (18th - 19th Century)
I Ellada Tou Riga Feraiou: Mia Proseggisi Ston Neoelliniko Diafotismo
O Thourios Tou Riga (Tou Lambrou Katsoni) - Katagrafi S. Peristeri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9938deb0a89ed6453ae7818d53c9fa113a4688726663b48dd7dd05f1f7e42a0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19800491 — a six-check JSON result.
O Thourios Tou Riga (Mia Prostagi Megali) - Katagrafi Papa Georgiou Riga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c620a27185b8e738af029b8c5fa9513117a6734f01a6e155f494ca501ac796. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19800492 — a six-check JSON result.
The Greece Of Rigas Feraios: An Approach To The Greek Enlightment