The Orquesta Sinfónica de Xalapa is a Mexican orchestra located in the city of Xalapa, the capital of the state of Veracruz. It was founded in 1929, and is considered the oldest symphony orchestra in
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 0xb6acafe0386847704b6669c6fb1692c8ec4ef40dfd8c0c2a8e1c713a06030201. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54624982-353a-4e52-a404-63b8707eb0f0.json and https://artists.proofprofile.net/proofs/artist/54624982-353a-4e52-a404-63b8707eb0f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La noche de los mayas: I. Noche de los Mayas
Revueltas, S.: Noche De Los Mayas (La) / Itinerarios / Ventanas / Caminos
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 0xbfec7385c3abec57204c59b33f6eb33a5d0f7572555f5d0dff4b192c0d04333c. 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/MXF580702186.
La noche de los mayas: III. Noches de Yucatan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa722b27de404077fff39cce6e12fdb684f809c88f17e44b2e885393815b8e31. 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/MXF580702188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb180c006e84ed699d1940235d322e16124c854a8449077a9eb19040dcf30e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXF580702191.
La noche de los mayas: II. Noche de Jaranas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474a1b839c4eb6f232efa44100979f19d8156182f26593aff3d4c74cec70d36c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:45:23Z), 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/MXF580702187.
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
Revueltas, S.: Homenaje A Federico Garcia Lorca / Redes / Musica Para Charlar / Sensemaya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f972d7e8bed50a861a5f6d52e352fb760d5e45db00757cd55abad9676d48674. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/MXF580401450.
Homenaje a Federico Garcia Lorca: I. Baile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068a67c42fd6ecccd4f49c9011f2406c1a1c0f2c956e405ccbbac58e080e02aa. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MXF580401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00565d2e49b68713e347777741c3ac110a82bc4189c5fc25e00379e429c67fd1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/MXF580401451.
La noche de los mayas: IV. Noches de Encantamiento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e9e7fd05c52520f014202d270a6d7f60c2b1d1fd9614fffc692a2341e9e466. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/MXF580702189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731297587f8a40006312017ac890e7c25445f3360cc861566ef5675e6c65016e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/MXF580702190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5bd7ef02dcfed6d913450f389b5597cf38f5953e251a49a07307f06b88fc7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/MXF580702192.