Rubén Pozo Prats (born 21 July 1975) is a Spanish musician singer and songwriter. In the second half of the 90s he formed a band called "Buenas Noches Rose", which he recorded three CD's. After the br
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 0x7c4c833a40c01322d95b8d613e194c95e8c11468b72e424dd76c0a5e5d597da0. 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/c4444431-140f-4735-bfb4-debe9a6ae38b.json and https://artists.proofprofile.net/proofs/artist/c4444431-140f-4735-bfb4-debe9a6ae38b.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 0x600b975afeda15969a7757caf8001e7f7a320c9307dc5e463662e4f173e13f3e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ES5021200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3097635a658d3aaa6f828a68591b1a09bde7c6a6556259d0512d356d7035627c. 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/ES5021200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aad7a5e17723f7ca4a57cf8de4f312131793fb9c1155aedab52898ab34ab59. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5021200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ec9b79421a2bdb224d9d351e8d0150886bd76d0eb064eae09a062ac35c2b11. 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/ES5021200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40646135bccb24c57824fdbe898d784ef5ef0d0ed4262e36ec22369d764cdac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5021200096.
Rucu Rucu (with Susana Alva & Efecto Mariposa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc28feb7702cb9666a5749dc685107074079fd17370721af68dca8cddd4f90d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5021500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92dea34c063e6b167579575c9aad49dbeb8674cd95466250555ae9fb9f36224. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES5021500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25b01bd5a2207d2c170c40cd79f49a3725ff1c2c2786ad068ea761c38be7fcd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5021500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa26774b616c8b892f9cfcb9e92ba6d059a12beb7a110806a503e16550f5098c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/ES5021500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa662e99dd7f3570113b1334a5feec7f7be89fd1dbaee167eb9f92535260d97f6. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/ES5021701792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ac45fbe5d89cbaf62d564658e5a05bd6b4caa6b30c285a4dc8c089228a834. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES5021701795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d92fd5791c71559d33097012a6b9f9facd42e145680b3491455f7f9740cff1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5021701799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbda44663f646681071a1d74dbc60703a7cb87dea2e53bf401513825be8b5f42. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ES5022000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b3e1474980c06f1f5eb74c53e6d520413447b6b82859a6f8850f7bb5da6ac6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ES5022000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18662306d342d162c241c4a2679b268c5d72e9c81b9b57b629e316a339655455. 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/ES5022000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8d9037cc4cbd53a9ca4cebd6dc8c14924ac255f82652c3a8e0175e03a70462. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ES5021901472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4630d5ce26b21905bd15b5a64dbf1f4bffab38b02416d6711d95885b96f09663. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ES5021901473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65daa51451a9c4794d2aa9512c0f56c243ab2488fb21a8a095a6616e23d33cc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5022200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc934135de4366a6f0a280e3a8162410b00396d48519acfc492f7dbbb7d461e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ES5022200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92dea34c063e6b167579575c9aad49dbeb8674cd95466250555ae9fb9f36224. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES5021500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72e4608e65e3140009007e319a23e4e1310296d65672e84cbae2e090f8c3c62. 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/ES5021200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4630d5ce26b21905bd15b5a64dbf1f4bffab38b02416d6711d95885b96f09663. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES5021901473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a946f5e340817fbb38a27478de2233f55a05b92d83284e493e9beb2e6851ac3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES5021200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a946f5e340817fbb38a27478de2233f55a05b92d83284e493e9beb2e6851ac3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES5021200093.
Tributo a Sabina. Ni Tan Joven Ni Tan Viejo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbdcf800ce2486c67206e6c024c53a4259d657ad6599869a070fd976233e3b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5021901637.
Y Nos Dieron Las Diez (feat. Travis Birds & Zahara) - Tributo a Sabina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933e18753b308178d6940bc83db8304013711a47c10f78658945ac561145ab90. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5021901596.