thumb|Accordionist of Los Palmeras Los Palmeras are an Argentine cumbia band from Santa Fe, Argentina founded in 1972.Made in Latin America: Studies in Popular Music - Page 83 113473719X Julio; Espin
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 0x8206aff8216a9ed19c7136226fd0dce51102c1ad58ee2cc9dad4bd53220cd7af. 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/c47c73a0-9317-4f05-abf0-d925832f99dd.json and https://artists.proofprofile.net/proofs/artist/c47c73a0-9317-4f05-abf0-d925832f99dd.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 0x5e0b931d130b8e4db2eb2c6fabc04ac74ef4c02bcab067109787ac92c6b2f5ef. 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/ARF061600397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89447962fbc30e2b28e077f5e1286a08e1889dbf03c989da4660f9db8c09afd. 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/ARP7V2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56430021478b228fc383a71b01ecd91132ea135ee1cfdabaceea82eac56cf15f. 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/ARF062200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89447962fbc30e2b28e077f5e1286a08e1889dbf03c989da4660f9db8c09afd. 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/ARP7V2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4885c8d0d3ed04601d1cb859b014948a60e8cdadfbde88d3baf9221d13d8ec6f. 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/USWL12200963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89447962fbc30e2b28e077f5e1286a08e1889dbf03c989da4660f9db8c09afd. 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/ARP7V2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546e8303be3c634316d14366919d0264db343327e2a178ae2028f7e4cd3730f2. 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/ARF062200522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028ef80f711fba478fc1391d2cf8b4d866a020344adf142bc35bda8984765329. 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/ARF062101131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7bd9e8003f08746dbded88dec9bf68f0017fb7d662d46860eee771d3e20451. 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/ARF062101132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8d937ac67bdecccf5055b675213fdddb5589319c7d4b3b63e2432aa2b55e72. 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/ARF062101133.
Que Cuente Conmigo / Mujer Que Mal Me Pagas / Nunca Volveras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca416262b5ad1fba43e151003390ce18c94672d564b49e23ef239322ded16131. 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/ARG991026150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d66887357e9596726a9fc3f0828e9069ff7cef450e06dbfca4652920048a6f0. 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/QMFMG2312040.