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 0x3daa7d69043f047a8e333d5bb784b048c4f805cdee024daeafebe9fd87f72677. 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/bed5c429-0183-41f5-a414-f85cfee0a5bc.json and https://artists.proofprofile.net/proofs/artist/bed5c429-0183-41f5-a414-f85cfee0a5bc.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 0xdb0c7a8f400ea41f961b92260dfaf41fbb2bde7ab0335cd3815dbda1e05e0f93. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1543569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4a6144c305ac272bbc0943f94b52ebf495484467861fc09301f1d8eeb0c472. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1439347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6562249e8ae14aa680a79cac372e8c1fb8f27434d2c6e78c272b589bd4ca5113. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91746413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fe9dba72c7d2d6206c33a92da1d2b9bc471196afb8d311efb86f416115f08e. 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/QZGLS2466043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c4eb20cd4a65fda5acde606c01bc460715e6a7426a18b547060fee0afbcdfb. 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/QMFMG2349369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa827f0fa2049f96107f2391f3ae5814da5e975e27f772db90aa1f54f797de6b1. 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/USUM72021891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7eb4dd64d74392eaee31ee60bb52640454e8af5cd055698ca02528f4edb272. 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/USUM72120266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa776cad1f17604a9d73baa527dd1a89e8fc84ea5395495ed3056eb023680266d. 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/USLD91761915.
Aguas profundas (Acoustic) [feat. Yasmil Marrufo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a352f934e09700adfec18bcf73f028d16e64a7ce5bb3406fb8bfb1ae2345a8. 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/USLD91761916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda672ef44ade9606af2b17bf1f13527dac2fd25c1b2d03b0e274f2451bcacc. 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/USLD91761917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39a84c99be11688773ca7eb653a532d498c9a06599c0a0c4845094814a8f1c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91761897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69bb122cb3f33bd1f45d9efe20ff40d0902ae78d03ed7177e98e35c5a841730. 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/USLD91761918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48691cb2c3368f59f429bf2ffbd20f181edb8cbd0de1fef48ffb708105e12b4a. 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/USLD91761919.
Lugar seguro (Acoustic) [feat. Jay Wheeler]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928464f7859b3fa99b10b31bb2bcee66731a4656ff1d46637c9c4ca864fd3882. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91761920.
Penicilina (Acoustic) [feat. Yasmil Marrufo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b86b9dc20cd8b83036e56f3367da12da781b94d576dd61d7ada2cfcfbe8da9. 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/USLD91761921.