Quiero Club (Spanish for "I want club") is an experimental pop indie band from Monterrey, Mexico. Since they took the music scene by surprise in 2004, Priscila González, Gustavo "Cátsup" Hernández, M
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 0xe87e187d83e29f64b22e6856d6b21c8d4db27641123db297f826b551462c7e86. 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/b5df43e2-19f7-4123-992c-6c3b7f6ce543.json and https://artists.proofprofile.net/proofs/artist/b5df43e2-19f7-4123-992c-6c3b7f6ce543.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 0xebc18bec6e1094dba4b71c68a364dedd3d8f59bc9671b353efe3403102b08726. 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/MX3741700643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256e3f75dbb096ee32482764810b5b6adfb9f88a0ebf81f0f031bc154acbbb28. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/MX3741700644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401ea72d19c0fa4d9ca56cb804014365fa4aa031621f1bc8fe527cd7d2385ad7. 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/MX3741700646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c07aedc80c38d0d0f4df3f9618b0f7d8c46bb1783419b31f989396c697464af. 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/MX3741700648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8626f6f0ee8f4c180ea2304880e67b1c94f8faf58cc591f7fdd348a1af8d94e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:55:17Z), 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/ES71G1513923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38267128f3505e5e77e2671000bb92e0158e3d3fd4cbed58879e69f78e57c9b. 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/ES71G1513925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a9fe38328a45850a37695634da2d4401f92182eb1a1fc8a1231f8f236ea92a. 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/ES71G1513929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff10de3ec06cc2769624eed8222ee1c5511082c9cefdd884cca35d3f45aacec3. 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/MXF820700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659aada175f843bd4e74a5d7ddcee3080fb0cc278696624714262f93f21234fc. 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/MXF820700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb6a4f21dd8412b25a0a7dcde7ee3a255183e0109e0e13c40baa41bbf675c34. 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/MX3741300613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef23899b731e11afdcf3720b39f5a834de68f1a87f05e546c15da6987d3d9186. 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/MX3741300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78e0c50bd72db23c4b17e6f352207d2cff66b9bf562c4b211db2dc6093aa90. 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/MX3741300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463f76132d621817a205783e0216ebb65f928e186da710263cf8bf2652ea054d. 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/MX3741300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fca9b15ea31146ff016b54418a7ab4d2e50cd7ac1aca8f61d8afc5800b14021. 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/MX3741300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40287ac7591c0ebf02d8b440d7403f7406f12f16d6b1553ce2c7a12f228dbe1b. 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/MX3741200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad711d67c9597ced4c3ce29218819690a992a18ffe4b78196e5a0ba2f04fcce. 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/MX1041100105.