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 0xbc99f9e3adbd2806303d7ea8f8f35c6be5ebb24542554157bdbc3aeea251d477. 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/b780fadc-9d03-4194-8e62-cfc08f0b42fe.json and https://artists.proofprofile.net/proofs/artist/b780fadc-9d03-4194-8e62-cfc08f0b42fe.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 0xb473abd3baaac4a8af5005aecd7eca2b2151ce0be1c22ad002b78dde12ab809e. 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/QZWFE2396062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346471edcfd7dd0a298aa6fa4cb23afad034389536d6a07c233960803b54b4c2. 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/QZNJV2358822.
Salsa Mix Vamos a Escapar / Te Acodarás de Mi / Hablame de Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777a1a4a605e4026a8b19df86423e6e1cfb5805b4b66da145b025e0bc1dc452f. 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/PEID12008180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bf4e6899a467d56470de9ba144797e6ea4653c1364493c87b17c13e0dc9e64. 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/QZK6Q2005578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a6c9bbc5d8cf0ce229e98292d1e67b846149719e8182c3cab9884b363b3d37. 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/QZHZ52016094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bdffc9ec576331c6bbe0c01b0cfe6fae5e7c09c39a31557ccff73db35e178c. 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/QZW9K2337543.
Solo Quédate en Silencio - (Versión Salsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe46d6aabe3b25028b233462a095eb2cb4d4463f59e6c972f7368c9762d301d. 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/QZW9K2337544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2f43d8dd2f47a5c6cf3b82cf6d6a102add34becd38adb3497452e18276ad53. 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/QZW9K2337545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9a2f91cae3dc5f69560a683819d93cfdd10b133ba9cd124d22e3599200197. 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/QZW9K2337547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aea111e894c6639946449e7a9fdc7382742ac18eca259ca02105ab27c4c207. 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/QZW9K2337550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1f232d4e4f08301367425234e0cc2a63941a05c80a1dac7f0a269435326cd. 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/QZW9K2337551.
Por La Calle (Música Original De La Serie De Televisión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db008305360e9306eb04379b5cd462ca26cebb2afc5faa1620d77f50088301e. 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/PEER11811048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47124dcaa5c43eea8369954308dc3796e1e92f2000ac339e8eec11c6a8d720b. 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/PEER11811036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ba03e33beb698ee80cb56ccf8c2e50afa605a625797d5b22315270c65a293. 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/PEER11811077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dcece8684d5ecec592421d21a158c9ce0ab53dea57485f1cf5ac61852cbc9b. 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/PEER11811072.