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 0x8755018c263dc839e02508cfc714ecd40b507710c0e26fc390a1aa1019ed2a7f. 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/a97b91b0-9768-469d-a39a-25db1a60274b.json and https://artists.proofprofile.net/proofs/artist/a97b91b0-9768-469d-a39a-25db1a60274b.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 0x8296e43e4c5f31daee800fcf6d2e351a170be081d8d50ca13aa9a4979d28846f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR59R1631973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f655a3395a65a847ed49318986c9e491e9528a232e8cde8b8d03cd9340b7b10. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/FR6V82592791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ada639267c1031c82035166d449637a3f51fe9bce3a380a2cebefd129c8d9b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:51Z), 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/FR6V82592792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead326b96c039210fd3875e33ca7dc8cb95ae80035325f9c1d82a0e7644bf21f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:11Z), 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/FR10S1423221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b4382d2a4ea2770d3d93a2e230f61e29d21084f67bef96e26c50707ab5430. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR10S1423208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7829c59c796c5831389e928fadd73b4fc4033cea12587aaf6ec58ab879f4ba7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR10S1423209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4d33b2df7a2b4b6de7394e3ecb76874b65c0bc5ca0bfb9eb99f98ed86e55e7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR10S1423212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc967061eafd3693ffb6c5d8a6dc164b83d30b82309530c128f41d0dd0dc94f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR10S1423214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efa9343b22e16f6d3124a7746ec1e7bec15d97808f1d5f6ead5de25fff190ee. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/FR2X41443227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255fe6cec5ef61e9b925170b14c1894fa96a6eb5f749da790e812f7fb708f43b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:46:05Z), 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/FR96X1694066.
Ellos Descansan - Mientras Nosotros Compartimos el Dolor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433965a0b0ad4cafabe302186740a9ba00e1d670869e4e56d2ce06c3df203a64. 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/FR96X1694068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ff180d6863cf6914b89ed72b5bf09e1716f9855f702bd5941b345054a21d95. 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/FR96X1694073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44a20b98c58bd5285d139d33e794442b609f9aa9cf8f13009a44119b6c3ec43. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/FR96X1694075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f8f7e1460c934dca204c2ca847b5dcf7111a0fa8ef0cecf652a0ca623e0f23. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DGA062041061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73a635e29bab7b577b0ffdc7765e309d55184d2acc0f69bc16a3e43e0fbcca7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DGA062041065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695c7c6a8ca318c4c9f7ef3bb1b236558aa643b9daffab168ae3a3ef2c000218. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR10S1459518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8436d7f31d3542af226dc0f2722e3b4ecc3833dde6f0d4bb95cd3eb9a8c9e49b. 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/FR10S1459522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf558e106c30f4f7c70d6c52a37cbc78c407791ba23129a686eaa36a48d0f8b23. 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/FR10S1459617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e5cd82964ec780976939c1c6e33eaf2980e3390059e966391fab370c789d2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR10S1459640.
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 0xda5173e909b95088a3d21e5b5a1c6881a803a4522da35f738983aa7823983a1b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR10S1459635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9974616b1d4eca95f1ce227f44fc4fb55fa5d6d87b824c17706c35c3f5d38b63. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR2X41479843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cddc65294c79c711ce26823f58647478dd126c82638ff31544d4c3e84ffdbd. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZNJX2012156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c318c16b28014d1eac283203a51cbb324cd5b94aec6fbcf47cbf09078beba. 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/MX3742200182.