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 0x30888a9da764936e1764d0279cf9eb9c2ba9f067012c70283b060e874a5f578a. 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/3f0c6948-50b1-4606-83f6-e92cb30b3a03.json and https://artists.proofprofile.net/proofs/artist/3f0c6948-50b1-4606-83f6-e92cb30b3a03.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 0xe5e30313bda42647e5c5b66d6dd5f935787c2dcb5ff1378241328023f6234e6f. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/ROSMA1600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab92f4c87d341be40e6bdb5de0f94d0865daebf8310d0d0b3df7ab48667f7d3. 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/FR10S2208427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34212222798be95c4868baa7415cf52d0dbefdf1d0389fc473e0ec440ec99d57. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/FR2X42219362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98bd92933c2ca65ad4bca1cc807ef4ee36b8b848962b3597620d4d6cf575aa6. 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/FRX872236360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00208470c3ea8c5a48e0de2d63721c37c8d57629b1d08083b150320d3034fbdf. 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/FR10S2208426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaf582eff2bf3b58521b2881a76ae14b1361c4310f8e8b929f35d9e22917154. 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/FRX872236361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d03a1a3b45e6ce2a1a2ffbcce2c612a28ea3db34f82b3efcff09d50ad4024b0. 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/FRX872236362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aedcda27f5136f89c168c211b126deb0a9d131233070c2c2a2b4a740568cb87. 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/FR96X2200777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fcea57c01b43c9756991892c7f5c8722c91e52d8da45a3a7c69dcf45a94ffd. 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/FRX872236363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a392762230998dd707cf767f3333723942c96102279637b5bca41c44438c52. 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/FRX872236364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73d537ee5f9c2f68355794be9ac71b039bf6027a7136f3701723c0174ad708e. 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/FRX202255353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8301b8dbbcfd55141b5d33e36ab00c6d6a7d67f2eb77733ccc6e57edc7b15e7b. 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/FRX872236365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34212222798be95c4868baa7415cf52d0dbefdf1d0389fc473e0ec440ec99d57. 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/FR2X42219362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c17eec956f3b86d931430b0b83b4afd9a71291baf6abdc919188d11175113. 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/FRX872236366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11617faf473a8dbd62169635a547d08b9bfefacf2557425d31a8139b2d3f84b3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FRX872236367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1bd19e4c4cc5524e145256b9d06ccf517b9f8f537c8de2e749ef968f5008e1. 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/FRX872236368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd040dcdab1842c27b10355eeee572026793ea3e4222af82ec3a6e9360b7298b. 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/FRX872236369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601d3caaef8d41f3d07431410012c103e4bc5834f00655ec6d004cb580bbcc6. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/FRX872345962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d4d8f8a386596030bc2c280426829354e2d8ac5d60bafb68c09e1139c1e7d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0H2351146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ecd97cc544730de6aa1c5da468f6669197fda0bbdb4f5c8b4779108f04e0c. 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/FRX762474505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb01f533cf5b58543f32d235db0711e596e7188e2c041b32b8005b09d1c5fa9. 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/FRX762474506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0205a9403aad7213f423d5b9107a779606f33f3ff502920a3d7e75084b374a. 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/FR10S2365009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c6f94a82dd1a08bd28d2a04038ea7f08d6ddbe409494d081d7fb3e1b1eb2b4. 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/FRX762474507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d4d8f8a386596030bc2c280426829354e2d8ac5d60bafb68c09e1139c1e7d. 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/DGA0H2351146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0981c060c2fbf3815387b49995c735d75f56b4263fb799eca62ff45b7dc4a. 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/FRX762474508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f524f8f11b4730e21e144e18f8550024e7b26ae5f7daf2c7e258cd5dc44e6b. 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/FR59R2467726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311bf6f6bb6578b88ebbd500c523cfce48ae3c3e4c55d500b614acb9d93c2770. 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/FRX762474509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf533ce5c952af8333c4aa44173c415373363e6fdeb29452e4ced883f14563e23. 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/FRX762474510.
Țara te vrea prost (From "Candidatul Perfect" The Movie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ecd97cc544730de6aa1c5da468f6669197fda0bbdb4f5c8b4779108f04e0c. 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/FRX762474505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb01f533cf5b58543f32d235db0711e596e7188e2c041b32b8005b09d1c5fa9. 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/FRX762474506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0205a9403aad7213f423d5b9107a779606f33f3ff502920a3d7e75084b374a. 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/FR10S2365009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c6f94a82dd1a08bd28d2a04038ea7f08d6ddbe409494d081d7fb3e1b1eb2b4. 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/FRX762474507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d4d8f8a386596030bc2c280426829354e2d8ac5d60bafb68c09e1139c1e7d. 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/DGA0H2351146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0981c060c2fbf3815387b49995c735d75f56b4263fb799eca62ff45b7dc4a. 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/FRX762474508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f524f8f11b4730e21e144e18f8550024e7b26ae5f7daf2c7e258cd5dc44e6b. 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/FR59R2467726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311bf6f6bb6578b88ebbd500c523cfce48ae3c3e4c55d500b614acb9d93c2770. 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/FRX762474509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf533ce5c952af8333c4aa44173c415373363e6fdeb29452e4ced883f14563e23. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/FRX762474510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c40dbac05844ab583dd51ecb944e9caa2afc43eb9b42d2fced6c07612a0212. 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/FRX201913269.