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 0xc25017c12c05266a7c1c70dc824f6abb495a2d46c297d203bb0be47515ad83b3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46f3fcf0-e362-4aaf-956f-e20693fc1052.json and https://artists.proofprofile.net/proofs/artist/46f3fcf0-e362-4aaf-956f-e20693fc1052.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 0x191d1e5f0f4d8224e6c66578e497701e1759f1b9cd8d0d421a187f477d3fef29. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2376089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd002e99a9a0634f86a9e8adb4692099ff62b1f179795a55ce7c50c515626bc. 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/US7VG2376090.
Medley Que Se Caiga el Parque: Tira Que Jala / La Patineta Loca / Que Me Beses - En Vivo
Mi Mejor Versión el Concierto Desde el Parque de la Leyenda Vallenata (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e9ebcd36c34f91d5f413f251ed12376223a57d1bd731ac026f5de6b074428b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9M2333659.
Medley Chiche y Wilfran: El Forastero / Si Tu Amor No Vuelve / A una Sirena / Sueños de Olvido - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9b2d61adab571bf0f18e0dbc7decf6c8ed77fae9f059fb17a75623c6e143cb. 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/QZW9M2333660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1711eda43b37e8c662209cc93034faf1468ab62d62fd90c03879f9e2c493763. 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/QZW9M2333661.
Medley Homenaje a los Compositores: Camino Largo / Te Dedico Mis Triunfo / Ausencia Sentimental / No Comprendí Tu Amor / Tu Olvido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde019cc347b7088344e4a0a96e6fe4684267d983b561f3739013be623248415c. 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/QZW9M2333671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8358b7d2cd13952440eb03df30f503b076437f5264218f1708c783ec1734a0. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZW9M2333674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15427ee44b6459895f4c11bd0573b9564781c8f8951d28443f77b3f040dbd483. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZW9M2333677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c57cfdcdfdb5e73325721ef290a8f2fa22de8505c3e3d7252c70490e2e5c3c9. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX202297277.
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 0x2e0275d16f98409522ac6e0c3737a042a8913e8b6edf224d737f7892c3b989c9. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZW9M2333669.
Medley Yeyo y Rafa: El Más Fuerte / Señora / Hasta el Final de la Vida / Cuando Decidas - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643700bdc719b1309462c7258da477c5454f26166614bc3f22f95e98ba4457e4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZW9M2333670.
Medley Romántico: Claro Que Te Amo / Recordando Cosas - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3dfbda0fdb8c48f618c48d07724fca68be437962ae111665539b8e2dc1311b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZW9M2333675.