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 0x8f7be35a2c86211d9e3767dcf5e792c30b708c50006f32714c3afc3d875151ff. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bea8fa6-e064-41a7-98fb-347605304a42.json and https://artists.proofprofile.net/proofs/artist/3bea8fa6-e064-41a7-98fb-347605304a42.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 0x70d306aa79823588159fd601eae6dbc02ae2aafaeb71d5f6bb8572c228850c43. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR3R21125057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e4f7b5f57554444000c52216dc7c90a7fbd3495d7e4d0b211248d87a773027. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR3R21125058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725f86a8ff9fe01ae53d8668b73fd406c158a6e5c144fa0aaf9fa6867fc5a1bf. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR3R21125059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36a0cc7065c606e9d26e76a8a2f3fd321fe72b4dd153181560d9b2a6eab98d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR3R21125060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89806d872200eb19f2a8705cfedad9332af80a25897d2917901307ff914e075. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/FR3R21125062.
Bloque Cerveau - I Shouldn't Have Taken Two At Once
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c28d9f2a8332f554f30b2f377edbdab3103a2b4e0d5f83c83762bbbf24b77d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR3R21125063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d69d34f76abdf61fae6696d8dc39d9e4cd57289d4fcb013b44c16374b237c30. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FR3R21125041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3710dc57817df82a280c890ecfbe15fc0558ceff56276ff41cb373fdc04c546a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR3R21125032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e854361774991537871780b803b19dfb485c3a165a9147677b7a7e3ef22ba8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR3R21125033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c0cec876a49afebf0de3e4fa0052d052921c2bfc31096a16265e76c1ca7e74. 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/FR3R21125145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f178183aa7375ff61bf586992646b447a892225fe10a5f8cd846498dd359d8. 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/FR9W11908236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d59a5a9f5ed14ff2852cbc2b0d552b9abf13cf5c9c16c5cd75e0be786fd7cf. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/FR9W11908238.
Illud Divinum Insanus - The Remixes Complete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fbd7feab9aa2ced6079520bb4d63245ad77a1cdba476fee584be4d895a384e. 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/FR33T1125609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9219f321cc23d842fbd9a30db518e7e69b7e7308c57df9d98c7b680cf6bf94. 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/CAV740733012.