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 0xd8bdfc0db66ee6c55e5bd53039d6675ad5423ad92813e6c007e2a99631e32eb7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eaf10e0-02b7-4875-9a65-79041ce90def.json and https://artists.proofprofile.net/proofs/artist/2eaf10e0-02b7-4875-9a65-79041ce90def.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 0x6cf4676731bb078f4ce8baa59f08b0648aa1e9b34feb45e9972d01611d272bc9. 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/FRX762166574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081ab23eb74897ac4ba36987fe083f58b107a8958e4670caccb8988540397d34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM72200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081ab23eb74897ac4ba36987fe083f58b107a8958e4670caccb8988540397d34. 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/FRUM72200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef08e5148c3bb1b72d48f747aa095b3f2846e0bd8c6c8bd248d30c703e34c0. 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/ITK191800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea90c214b4b1fd12ed5e455d923f808dd834b59f74f79f702eb3dd70118f1810. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRD8V2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3730163d4e09dfdc32775a64c44604c77fe5a53472846980ceab449b2d1667. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEEO72000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e03e72eeddc6b93d2fc414d762869e4c5ffa7c4650f5d335f0dd1b3d6b8539. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R1899396.
Carnaval de Finesse 2 : Les Chroniques d'un Jeune Entrepreneur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf4676731bb078f4ce8baa59f08b0648aa1e9b34feb45e9972d01611d272bc9. 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/FRX762166574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e44a814345256b898bc63e77ae96968f0655b289dc02ea8dd7773719b20e555. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM72101108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1973a3f55fa94f869add9d623b0b45b5b11b7f19309a124ce0928c763ee1f8. 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/FR9W12031172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1973a3f55fa94f869add9d623b0b45b5b11b7f19309a124ce0928c763ee1f8. 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/FR9W12031172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a69b7a1eb112fa8e3dfa6cfa5759816de3f848bd0d30f961fa65d8498c876e0. 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/ITK191600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7defec2e1ca475ac47d5f604f44d3731c873f73ddd1a1bb1cb0d3128420b649b. 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/CAC0C2200792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc6f6c7952480abfb54150261168c16169328d1c566fb07c539ebf0c92997e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2003353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22063c732dd7446b0b35f9c1b4f543cf57c0e5e5249e19892f42e27eb52999c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:31:17Z), 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/ITK191600016.