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 0x14f628cbc6795a33a1d0de0acfa694f83b5c5e1be87f0206d880f020627dfe2c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61e84c70-5dcd-4c65-9271-d4020190b734.json and https://artists.proofprofile.net/proofs/artist/61e84c70-5dcd-4c65-9271-d4020190b734.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 0x6b58f5230a914921f95303f45b5d5baf97e7f835169d5ddbe9236d902320778b. 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/GBSMU9061621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11439ce6879c192db2294ac154ee1423d987b22b5a592d6966a5be2e826d1aec. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU9061623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09859e447bad3b5e03c37b1e1710a0116765804f0f75676605fc1f8f36ee2b99. 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/GBSMU9061625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2555dfceb2f012be5f7299279db34bb85e398554ef343d0dcdee6b3391468e. 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/GBSMU9061626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fed045f2164830f4688e3a64e2f2da29b93335fdfc585df4a4d909a85ffb2c. 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/GBSMU9061628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a59d628c9425dc68919979bed3abc9d519963886d148ac68686ad0a59eb8b9. 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/GBSMU9061629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96937c82d749f4c1068b2538d565e2e2239aca014a770fe4ce0db94a89e860f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9061622.
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 0x48987b271994d37d13a00f30622a4e55268df6759b63f81cb3e9f2842c5734cf. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBSMU9061624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4882cc9eaa8ac9e6bce0a70a1c2944b0d3b5070a5451ef5687dea096d27d5909. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBSMU9061627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede1dcedbf4e69296df483b6e13e7d0d323cba84dc3f6195b2f003fb4d8ac1e0. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBSMU9061630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a2bfe2e16e5613fa84ca1644faf87faba6b61248e4053d8274d539b011f84. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX8KD2234114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1513e0bdd337226139dfa77b922d7b90063a0ce76c7982e48d5a5f73bc5903. 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/GX8KD2234117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67071759ebd67409c50118bd57b0b9dd7d668fda755adc01b3c030befec9b435. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX8KD2234118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4e43394954b2917b8aebf8f633c22aac146ba20b038685b790b269b38926bd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GX8KD2234111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf061c1406c454df359188564489b12e654961367d55b6a013088bb6dc4278a7b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GX8KD2234112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7f9e9d517bb7e11e8eeec3a7e130dfdf2922fea2fd5b78724c740f068a69ae. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GX8KD2234113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2b1ec9137e5220ea0836ca48cb98947728e92754e24212337bc70d8cf5d060. 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/GX8KD2234116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9c929030d211127afadce91bc7e6c495809e08cb5bf1b18ece6dff63668605. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GX8KD2234119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f9c09355f80aa1d7728b65579702a20752b816648340439e4dcd24419a6896. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU9199060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6d38313a05cb0c360fee273d8c841d9335771cb360f2065fa993067ad8618f. 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/GBSMU9199061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2662b746575b76e76d1c89e38b14195750b2d4937d40c648dcf64a0a8b32bdd3. 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/GBSMU9199063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b2e5b4c927837be87d93ed4446f389a71d650ace39e6fce740ebe0097e60b1. 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/GBSMU9199064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15ce6b1be61c655a03fc23a8d4ccf607038b96d1c900a7f93cc210b97745f7e. 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/GBSMU9199055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eeaf4c1c5dd0b67d0152f4b6bb50f39ad08fa7d263516f614369008257721a. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GBSMU9199056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd867bf6637fa7e5dd33a22dc3f60aa403a97ca07bd1a8a570e75ab62a7cf4893. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBSMU9199057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34e53082858dc2529ce75e3b1edbb49a9cd90625bee0ac96dcbc4bd3ca1da7c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBSMU9199058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c886e6898c325465ecfa7fef6d32bf1e0ae5554ea8e8b02751b1532a833b24. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBSMU9199059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3271ae9601313766b3033b41c96847a42b3430a1883b260bef401909d77d386. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBSMU9199062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcab6b16912bd3b8fb11f28a86f70a7e210a233ba50706d330538e9dc3a155e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBSMU9199065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edd988540a4586faf3fce558b888cf512d9b071412ffa4040b7a34887351bc2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSMU9199066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b458d7e79165e4ffc37b29c35f451c6cfaa30d68e59956f96b58ce88204b3b6. 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/GX5MY2488560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b49f1a3fbf33a6f65ef38b49b506085a0c0612de9c9e5499691bfa683853f7b. 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/GX5MY2418112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a1c6b16f3a19ff5a5c4e6b620f7b63a39c3f2ea7ec86b049863f23093e3f3e. 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/GX8KD2213605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85de0c9adbe94c5cf6383fe1c7a194aaca6af459b2bd5f2832bd4c896dbdafa. 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/GBSMU9199121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6da88b491530d4d7451c36eded72318fc43a9798f4e8f00d1e52ea41b5af54a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU9199123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f4cc30412b00b2b6172c968ed7aca5a2ed7564c30c42e365e87b7c24693dbf. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBSMU9199122.