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 0x5cc5b11d4b422e5df4edfe8c2c3b89c2c93788410cd664700313bb97502a0137. 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/441119dd-141c-4ead-8f1e-204de2bab028.json and https://artists.proofprofile.net/proofs/artist/441119dd-141c-4ead-8f1e-204de2bab028.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 0x67f1fabf1d7b3767dfd58a6e98697bc4880bcf0668025241f85c019195c208c4. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61411545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8457255f692f10b4b9cae49e2f20564fc90342ec9ef73da12bba627059a9a030. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QMDA61411549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9145ff9a38a5ea665477cc48c615c80d35a3c403b7b934f42a520b0111df1c. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/GRFM19700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc5dbcc7ebab6df457ddf19f474e015de19dd73d20e2a429e6e77f13a5f1d60. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GRFM19700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d920820a26dedf3b72c0875f76e732b15fe9634cf65412b4ef2b99c0da0e91. 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/GRFM19700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28db5076bab09fe46d95322ae195a667a59e295de4426b983c69d14d0ba5c7a7. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GRFM19700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb96a3db754f186bcbb5b9a6344e65b38607d8918f043bc157ce72c409fcbfb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3091aaabc37c05a67e27197cf02f923a96f61a5a7b8070e402cec90395b37. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd448efbb5910f3f26605d94433d7df39b98a5c3724ba3f137cfd85dd5e0a1244. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aa8683b13577339a0141ec32dc8b563b32ea99e7aaed68bddcda2467f54ca3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GRFM19900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6e3ecc355b615b5331d39ad26dca3db439a222f20491e5ecf451debf7f978. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19900266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5866beaebd1baf38216adb6251f152a949f8a4ad311e52fe0e99bde5fc05bd7d. 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/GRFM19900267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa2d2c2bb65d9054d3a402b28019cdf77342189e039a0de65add392b378d168. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GRFM19900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50274244c5c5d33d51b9cf931cb43c1d694edabaa97f57fa85da6cb4b9a5e3f. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM19900269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11da237ee4d556086b71d5a6ad4943861cd78ec80ecb2bc14f73fb0f6f7f860b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GRFM19900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806bb434d2fb2fbc8f5c0cbf55e2bead777b098123e2b16295935d6572d17f73. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/GRFM19900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8524c1072c51348fd543059f058e242a7e72d2ef4e1488406d484dc7a0585e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRFM19900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aa8683b13577339a0141ec32dc8b563b32ea99e7aaed68bddcda2467f54ca3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GRFM19900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf236253a2d9d2fe131ac79c8f3c71cf84b7158fe749b782f85d3aae077a2c96b. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GRFM10000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e4781abc8dab0890600f5841c477e2680eba7b2344567320a3bd5e5696dc04. 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/GRFM10100417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc396bd49796aa3597fd08dd9770bab20671a154ab3fa63682387762a20426c81. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM10100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd3dd446b34b99b92f494dde6076b39867adad3151a2aed6ccd19fd8fd3d8d2. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GRFM10100419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429e4a251fc450c20db3bf54c50dc0186ba38335d0633be78163537d26c2fb2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GRFM10100422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4370fb97744d699798dd649668ad0404c7987ad5ce32f3e7df6e34a81ef114c4. 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/GRFM10100424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d283db7679094e61ae76335b838181c1874f3e9a0b92935e8230a3f5446f72a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GRFM10100425.
I Gefsi Tou Menous (Revisited & Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb1826a910f6e8e6f7f0c6ae3e574adfece5ecf556950519603352982710bf. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/GRFM11900448.
I Gefsi Tou Menous (20 Year Anniversary Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbb4916a88146cf6eebc856afac8150454ecae2a7df705761e135d3bbb74ce1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GRFM12000669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603af79488c0f2ee99515159c3c7d6d6d1846794222241583c5bf775f01b8434. 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/GRFM12000671.
Epanastates Tis Ypogias Skinis - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4191f3b7f5c2deeb245e90fd96fd915912afa84ed0b219c50d2850520d0113. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QM4TX2017268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f16f32a1fd7dc8f0425f81d7aadfffd3a9a52cad78ae39d4edf38de54ffaa. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GRFM12000674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60092bec500b1e1eb5afefb4276913ac935417aed9972e707ea8c1461444e75a. 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/GRFM12000680.