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 0x6f668df4915e86b27105ec923ba64ea1e00301c742600b60324600b05d632ebb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a45272bc-e57a-4c51-b88e-0e6e2b481428.json and https://artists.proofprofile.net/proofs/artist/a45272bc-e57a-4c51-b88e-0e6e2b481428.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54f4c19b63c6ce538035ae2ead41188d02a7059f1b1f519c2a8fbb11e90ed0d. 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/GRS019400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae87955aa55078855b4fdd731bfd2042fdfde53a96cf6dc333f8b144db94e0d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GRS019600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc219480285b18e12919fde20f567948b93c4ddc6bb735b8145531b98781e9d3d. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GRS019600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9cdcc6e5d6755e6967916a65d6bc42d32dbfec0d6fdefab1cf25233c19c7c6. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:14Z), 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/GRS019400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02147d403eda3e87a5e6c69d8d4cdb2d93eeb1c6c80a6d81e25fe6b936e18fef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GRS019200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a33fa79c52a7ee10d438222ed0be65ba16e46a8e31ce5b88b6218bf264079. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRLE10901458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30756fe06858aaedca28d925a3ebcdc15bf1fba3748452d1351548a59b5f798e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:58:25Z), 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/GRLE10901459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88384555b2750969d8323540ad352c1903abc4f45d566567c8fe5c9be8690ce4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GRLE10901438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150194e695a51a79626cb258e8d86176fd73e9c7ca4131082042ff9b370be30d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRLE10901445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f38f9e944e97a8f74e7c6d4393b27f63938cac34b0a9dd535e995c2ce77f63. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GRLE10901446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac757d1aa4f6b9d07f651552bb66d80178251274e5add76a5d989c700d32747a. 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/GRLE10901471.
Glyka Mou Matia (O Kostas Makedonas Tragouda Niko Gounari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9df92f7a9d751b7028ae10389d680be7da70429652b7da73e2aaa6a69a9f2af. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:19:41Z), 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/GRLE10902343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10d21620ba98aa8195f2e6496952a2e261f8c0be45d1e44fa9ffbff91a60e29. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GRMU11500098.
O Kostas Makedonas Tragoudai Gianni Tzouanopoulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f028540a2fbcefbdcb3c8cf0262f8f9bd52c496050c5d9481c54152462812f. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GRPA12100410.
Nea Filadelfeia (From the Play "Ionia Pyli sto Hrono")
Nea Filadelfeia - From the Play "Ionia Pyli sto Hrono"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2675672c9f47993f2b49a042d0fd82e7405c2e229a67731882cd54b55849da4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:47Z), 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/GRPA12400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b655115a83717ed37f29cd33b7bc18ce7dad24153f38060660f03e5113344. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:16:52Z), 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/GRPH12501463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b8958e7c233c03fd05965454ee504f7f3872d10c035663fdea5c9693867e4. 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/GRUM72000941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a216f10d73c113dd7f2e1389f38fb3d0bea2063b50314fcbd3f08321a13a95e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GRUM72000955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a6b2abce9056048fcd4487c5ce3e09bddf0379f1f096e92bf356b649a954f3. 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/GRLE11100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9260f174bf2c159eaec3d4ab48d3a8b106769ec6ba1bef4c1e74572a743e2707. 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/GRLE10901451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150194e695a51a79626cb258e8d86176fd73e9c7ca4131082042ff9b370be30d. 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/GRLE10901445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda51af13b65449d6e48c6c14f1d2a978c6e24fc01a9a0346787498f5c5f7fe96. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GRPN10800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00f5bfe64aca99570650b1ffd37048ff544d92fa8072a4c52db9b4526ec1cb. 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/QMDA62452070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c976db666ce5b0327e21ff6e1b5baa00369b5e04c5fc35f683cfea46bd0b21. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GRUM70600643.