thumb|275px|right Reveriano Soutullo Otero (11 July 1880 in Ponteareas, Galicia – 29 October 1932 in Vigo) was a Spanish composer of zarzuelas and pasodobles. He collaborated with Juan Vert.Historia
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 0x428ac78e2488278acf099207a959e56aa368d9b3647c3d258cc5cb0cf0239bf8. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31011e4e-2fb0-4b20-99b4-f410d354db6e.json and https://artists.proofprofile.net/proofs/artist/31011e4e-2fb0-4b20-99b4-f410d354db6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Leyenda del Beso-Acto Segundo: La Leyenda del Beso: "Intermedio" - La Leyenda del Beso
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 0x002be23aaba27f68659a49346b8b31aefa96fee4544bc067c571e3b5405bccd8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5027300894.
Reveriano Soutullo and Juan Vert: La del Soto del Parral (1954)
Zarzuela en Directo: La Leyenda del Beso
El último romántico, Act I: "Bella enamorada" (Enrique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57961a1558a841d86a884c3216a33735b57791b5c8adfeb115242e91a9be485b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ATJC92400109.
La Leyenda del beso: Amor, mi raza sabe conquistar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b922f59869d25aa58494acf9ead8199866353c3d1ae5fab5905dde9a3e7dea. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USCHR1373535.
El ultimo romantico: Bella enamorada … Noche de amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff394fcdf42da80beaec467200596d11b98fe4595011d093ba90419bed2b30bd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ESAAI0202204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5debe5affafb340d05aaa1bab290efa026cafd11abb2ae7ba53d133fecdfebb0. 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/NLC351319309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a04fbe0e1a0ac584b99e7fc88ba822ce67a2cb1237e7259c945e7aec6a16e3. 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/NLC351017505.
La Del Soto del Parral: Romanza: 'Ya mis horas felices'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5715fd8852adf7d0c6c04acc0242f6f68a12546dc221893ebb764c647a076ae3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC8703662.
Zarzuela: Preludios - Danzas - Intermedios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a3f2f3c717d225ba39325db967ddd69b90c6dcb08199948ef3670b926d8897. 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/ESAAI0202697.
La del Soto del Parral: Ronda de Enamorados: "Duo de Aurora y German"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342d870d8637506bb05f2b4fd8a29ee0b0803e8d682a9e5684c62c6c53fc4966. 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/ES5026900198.