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 0xba8463b73983341d239bfd9a0c5275c6399ef8b77bc79c681d70f150ca97ffd6. 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/75f2b5b2-35d2-4934-8368-49b128648e93.json and https://artists.proofprofile.net/proofs/artist/75f2b5b2-35d2-4934-8368-49b128648e93.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 0x3f7f13f6f1a03535cb20d40a47010c342e05e7777fb1439e832ecb7906e05546. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ARG991021656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3ae35ff462934580b881cdf72083c89c409b1d88ac1a5cdda15728033e5a3e. 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/US6R21429493.
Casi Me Mato / Velocidad Ayudame / El Mismo Tren / Fuiste Mía en Septiembre / La Mitad de Dos Mas Dos / Digo Que Viva el Amor / Yo Fui el Segundo en Tu Vida / Prohibido Enamorarnos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592d454780d235fa174223fea16b86ccce070864882d827cb099eb5a88984b1. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/US6R21429496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d4e3bd8cdb19b2a7fa6bf3dca029c777633c920af3408dd00ba563e984313. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US6R21429502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373d94446f1c5c4a52556c78e9e7cb9a779d849715b54d429cd4343b453dcca8. 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/US6R21416642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d75634ee20d01308509a368d63327768b00489e90e2ed1bc6bdd34ab849888. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ESA011911179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88d3be99bfe41b7be503b80c2b4930139ff0808161f472804bfa1540ea0e93. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ESA011911183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49f7f4f7b9d6ec8e91ea02ab0d55e370273516f2c4e9fbc22a334d4cf377cf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA011911185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fcfcc6f54f387fea1e1f49db7c5468b1b71cc4bc13b5830a830ecab0541707. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ESA011915503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ad46892aa417688c804da28378c4df7514f2f40f99638eead0a8ff6e65deb4. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/ESA011915509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf74cd0ce87a87c20b5cbd4583481462ca2c5f7bbb8f37df4ebf5e2d0a326166. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/ESA011915513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8144ae8154a1da4211275e474e4b93d535e35e163bd9fc45df1a8cb18b70828c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARG100902573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e17f8854ae4151f68a81637c31778eca26189b4835098dc12b79d058586c4dc. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ARG100902578.
Fernando Bladys / El Show De La Monada Musical #9
Si No Te Hubieras Ido / Louis / Pero Mi Cuerpo Grita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b288b8c08b4155d22f47690716c3e94e44d3b981da3e7578df0be1ce9333960. 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/ARG100811103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b288b8c08b4155d22f47690716c3e94e44d3b981da3e7578df0be1ce9333960. 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/ARG100811103.