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 0x585f3c4a2de9c020fc792bea3e91748dec7b95d0bc08d26f3ec92592c9d33470. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b18aefbb-1d2b-4d1e-9b05-8d0936ccfb10.json and https://artists.proofprofile.net/proofs/artist/b18aefbb-1d2b-4d1e-9b05-8d0936ccfb10.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 0x45791bff3813847f4cb017c0e1132449b58e960d41e4b87cfc6897e565133121. 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/CAMPK2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b41593461e79db7e3eae76fda21ac70b5780a713fc6202ae7390aea3de333ec. 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/CAMPK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b7c4463d9d471494e6a9519cffbfd41ae8f96a5411c52d4ff866497a8969e2. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/CAMPK2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa3b915d573dba10013de27225e1d394aa004c750e33a349f64c1fbd084e8c. 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/CAMPK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab1ef6e4d05ea8521f8b563c0b119ec741061d1adc3380b511bd3a8678f6e4d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CAMPK2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d9fc4903aacade890997d3daa642dabd98082cbac43f126375f56b494eda4b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:35:44Z), 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/CAMPK2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62ffce1fd0a19109703178b9652bca6113c54406c2c9401220515d39227d3a1. 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/CAAQ12400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6478296d1fe7f8e75c32f21db84685bdcf73941de9810b7458e5d6eab5fad0. 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/CAAQ12400572.
DEADLINES (feat. Claudia Bouvette & Virginie B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45e369da59e705a89a7a324966e513bd70a15cdb51d57d24970494db7d01fe7. 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/CAAQ12400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd204c89f484eb3f584079795852b83ac0f1385e5a880acdcd61d853b4a821d63. 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/CAAQ12200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c0017cf7c38dd52a318bffeb87d25bebec9d0be57cc281cd3556db751a97ed. 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/CAAQ12200437.
Pillow Talk (with Virginie B & Meggie Lennon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e9d9e8d24c7303cfc44a7f350dad78728b19987fac41d401841d94278f5871. 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/CANTK2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1fa44ecd52c65b346fa589512c79d539c3e4825804dfa8ac45e210bea4e2b7. 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/CANTK2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc79dd6d49d37325b37753cfe89f8309137b03ebcd7d48389a71d6776b884d. 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/CAAQ12400555.
La nuit (feat. Meggie Lennon, Virginie B & Laurence Camille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44cf6c529fee9976ce395270d0f3817e9c97f2753d9f790aa44953b76f8d2bf. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/CAAQ12100423.
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
Super Plage (with Virginie B, Clarisse Mây & San James)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84162aad6bbbb68c017f9b32e042109a254e0404ce48584f6cb03bf5d4aa7ab. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CANTK2000002.