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 0x808094e88b6faa33cc6f5e44144b2323476d87fc03c54160545c94dac60df45f. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99a9e0af-ad1c-4f6f-bc18-d80a9c3fee95.json and https://artists.proofprofile.net/proofs/artist/99a9e0af-ad1c-4f6f-bc18-d80a9c3fee95.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 0x1874f2561ab61617c3284d934c5c8f35fe310b5870ffb5c5f13bfe1774201ab9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USV291477387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47c2753c0ac61425a07a62c9aff9cc411030ed13df702d2f115f8c62ba8acc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USV291477388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0641b9a033e1b75e290294f6c2a7e0374bd2dbc402bf5f2c9eddc84cba5d81b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USV291477390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69807d25ea7f56a6c8266c45c4fab047bc56cf8256fbdb0bc978e8fec84aaab0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USV291477391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0121ece5755c7eb2375ddff483a4fd97623344370a13f83ecc822a03a810685f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USV291477392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a7309925873dfd0d3903cb8c0e1ef7a3db84d3d2eb51c431c30dc3f0534142. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USV291477393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8436a64a5ccaed59ba548a1f25eda54e8dceecdb70697db57c7ce3c0ecdea2e0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USV291477394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae827d4e31e4f83da3fe881ec32b461d906443c777a26148e1827e1aad34f001. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USV291477395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69157c4ca3db060370f820ef1ef6dc0347960831baceafb3195f368a6a5aefcf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USV291477396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8354484c9ab4c1fd987b94483681450f9dbc71525e4c225ec1d79ec5f7a7c004. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USV291477496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725cec79501df20235095604355fb7d09695adba70d876674aa096f0ce0986d7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USV291477531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee8024ccb8b71d12e2a356cd146f04b9ea442b06d5657da15d8fa2a95843f42. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USV291477532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268f7602e05f89cdb229afd400a947036613ee3609aa3b32c94382c33888fa76. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USV291477541.
Entre Hierva, Polvo y Plomo Parte 1 (En vivo)
Corridos De Caballos Con La Banda Que Pesa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4121c4a81e773137d7b76c4e7e0273a80a99f5aca5ff920d3745e53a411e4bd9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFH2455078.