thumb|Farantouri and Mikis Theodorakis (1972) Maria Farantouri or Farandouri (; born 28 November 1947)Farantouri's official website biography is a Greek singer and also a political and cultural activi
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 0xb17eb2e0f30bc4eee034fc0b13aa363b6fbc9f71f2c4312f04f6fe25044b48ec. 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/14adbd65-c73a-45b4-a478-af08bb508ccb.json and https://artists.proofprofile.net/proofs/artist/14adbd65-c73a-45b4-a478-af08bb508ccb.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 0x3a88146487b1ec6ccb880aaddab9aa1e451828a363e7caaf8b7a7bc85ccfa6a2. 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/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 953515 (2026-06-13T12:53:06Z), 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 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/GRE018200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca531d67dc44b516f622b6a9d99967f4c2ed52dae2fc47f1cf86aec652288160. 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/GRE018200372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e8cb7a7c50efb8f667e35953ec7e04281b64832e39a582c7ff64d0aa9ae03. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 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/GRE018200374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2bc27626c54109626dd34fc486068086e2c229aae860d9d2e49a9a3d0ddf2. 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/GRE018200375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1984428eef4b9a86d5c9e6b558d74ee09c7bfd3bfc4e2b083cc620626f224e81. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRE018200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993933a7fc3f3033847834a9fb21ba1de999f74d5f3f832f2e89978b53cdd804. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRE018200379.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702ab5083c843c68aefd2ddcb2b0de787b2de556458a2d9974f5c99913edbebe. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GRE018200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eb715e6656cf2e3f01a97e3d55a1d42b5576a888fde740621753c65c611dc0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SEVOZ1210201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1581b6e54ba932cbc27d14b36a80f18fb312b4b7fbd1458fa2fa28daccb9ed2b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVOZ1210202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751a246c2cffe434357097ed68b8a4fafce69cf78b84fbc70cd4a11de5174f81. 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/SEVOZ1210203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf832ee9ce6d6f5afea1c0e8c729a77670b31b6730f3c38d756a551a7c3015cd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEVOZ1210204.
Canto General: Pt. 10, La United Fruit Co
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592f2108b24f5112e2480f9a2d9017c962a315c8513ca4715a6524f3fb122cbd. 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/SEVOZ1210210.
Canto General: Pt. 14, América Insurrecta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cb823c0d6c3eeabb7f47016f0d4ee10b6b920393eff4a539b7b8af0b617c8b. 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/SEVOZ1210214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4a00d1ba898421a548f0964f4c666bb94bb8f70b2f2a0c169fd28b4e96b1cc. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEB331758501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64292eb26a29ff64072a0a2776d337cae02ec1aa1f1ee7573785244bfd48b5ac. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEB331758502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd98e6ce6ff05c890a1cf56d4c81a8ba6a69bc2d72cb4d18bc2fb75c6b3d65d4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEB331758503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ca6733e215381c33ccd09b2bdfda447feca39ce8d473679ec63ccc77cc47f4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEB331758504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806bf589951447178464df641177d8f8c89cbdd360e6c3e9eabaf53eab48e624. 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/DEB331758505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619b2313419ffa9954d4c34c006882a241f64a78cbc749e1cf0349b394eac86c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331758506.