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 0x67096c2b8a8b355128056f7bae2382e411924e2bc501d36cb1af166d2f90f07d. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2b10b3a-22a4-4578-8f04-48541d05334c.json and https://artists.proofprofile.net/proofs/artist/a2b10b3a-22a4-4578-8f04-48541d05334c.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 0x4059155145862c2415bfa3384220527d6b02d35ae6c381a87bfc5d451f59c025. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR0Z41800540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80b5652c1ccea937300ff14c6f415950299d7a46e458b8aca532ac43fd733ef. 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/FR26V1521760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c97582602e456e7a54356c6a50d0c425bd11e9fe8a4b8d229aa2a9ffbaf8b. 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/FR6V82697145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e969264e9988fb60359ed32047eaaddd939fcc110d48be9befc56cd3597d16. 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/FR6V82697146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356866bf9976b3aa6653631b058e02f0af53c3e2cd5806fca2fe759b5a30c6e2. 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/FR6V82697147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cb928c1c4d1d7bcaf1c054003fb262d8a1e71e03a729e2aa2bcba438a5d478. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR6V82697148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31967939c2747dcdcd4191793f76c1b5852ac7b99c2a2f28b226f0b21c5b97bb. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR6V82697149.
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 0x0b669a2a4c67c026e9de16f076b3581279292299b58328f70b205a2a56c4c14e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR6V82697151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32b8f1067b190518c716c53a028b76532c2f4448ad49a7fbf82f37e03bdc142. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:35:46Z), 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/US83Z1784449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa100662b9f457090290f2964e6ab819703f5980947dec778e655e8c7c79226d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZPA2021780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf367849dfbc9f69351d8773ee3d4031c1a53eb589298cb384906bfa2758eb798. 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/FRZPA2021830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a0faa20b8a6e261aa41af0e304bb5c53c1c23f76bcab78a12e4a4f60a1fa03. 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/FRZPA2021860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4647c601431be4f5abb925e1506e99b2dfa1bf228836813be84dd182fa393541. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRT092000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65d96f2b4bb950475e13fec48660ece77d15a7d86e9d2dbd13ca5e7ee95ee59. 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/BEC631800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec69976382a459d1e17aaccdf0d0e9c7ef1c5eb0e3317c5ea577cd66328eba15. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BEC631800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c8e5f537d419a6418c4374abe2ea60ecf729a2d061dcfa916e757c5eb40c50. 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/ATDQ91940001.
Around the World (Belgium By Food For Ya Soul)