Los Secretos are a Spanish rock band founded in Madrid in 1978 and often associated with the movida madrileña movement. The band's lineup has undergone many changes over the years, beginning with the
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 0xe847bfff91ad351d647f95956e488abaeff69756f7f58944b1de56497444146e. 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/7595e843-5f4a-45b5-a99b-e3652862f181.json and https://artists.proofprofile.net/proofs/artist/7595e843-5f4a-45b5-a99b-e3652862f181.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 0x50091413a1fc185fa078faba10d5686095591586307a85e20d766bc580e21d65. 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/ES5152000388.
Las 100 mejores canciones del Pop Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb153cd93bd483a490e735086239d650d70e3d8441b22c84ce48546ae28761b0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5019509000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457f41ab2dd0da875397e0de32bcde229e31a6453b0dfc5e43f2f85d2ab8b1b. 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/ES5019609013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457f41ab2dd0da875397e0de32bcde229e31a6453b0dfc5e43f2f85d2ab8b1b. 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/ES5019609013.
Las 100 mejores canciones del Pop Español, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972727e1e1de36b81729b05a50aa6b7f0a2fac6fda022cdd6a8ce0ddc4ce7cb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES5019609011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcfe1e6071698421e2a4b7fb53aa47446d9e73b5b3b9709aa789dc49d344a21. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/ES5700401152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc453e8dedb624fdfae4ab5d70ab7c0e4df7aaf302a0d1aea80c20262a070d4. 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/ES5018709000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457f41ab2dd0da875397e0de32bcde229e31a6453b0dfc5e43f2f85d2ab8b1b. 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/ES5019609013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c175222a2dd5cf062460d59a80fd67f7054eedd2e23a9ba1fe483142a718e91. 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/ES5018909004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc351f79026084c8b1ff0835afb263d77a0d777cb530d063e2c22e2431e78f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5019109004.
Todavía (feat. Álvaro Urquijo & Los Secretos)
Basado en hechos reales (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d608ecb94f11019e063ea72c4be5ab2f9c2493ab5aa0f590441291cfe17616. 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/ES5152000524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d608ecb94f11019e063ea72c4be5ab2f9c2493ab5aa0f590441291cfe17616. 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/ES5152000524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb153cd93bd483a490e735086239d650d70e3d8441b22c84ce48546ae28761b0. 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/ES5019509000.