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 0xa808388f711103fcd56c9e31d0bae1927e6f77163e2b9b6849685d43c7fa70bf. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82f4999e-2589-4b60-ad71-aac80369f1a8.json and https://artists.proofprofile.net/proofs/artist/82f4999e-2589-4b60-ad71-aac80369f1a8.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 0x7b03d1082baf571092cc4612be75e754b9e667eede69c9684c3c06711724bdea. 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/QZ5AB2162745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3e27abfc626d9bb35db10906d14be604cee75ddefdd5b650694733ca06777a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZHZ32140098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb8fcb9152915e460ccee5b7f0dc7562d92a31d5b5a423f842a5f013ef114cc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHZ32140099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28d27bd1f1fed6e48a9c637bf3e1c4ce8538e7b0e1f6ae388c3f3c078043893. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZHZ32140100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8eaaf68750881ec9bcfd0d56b6b2e8346aa9f725c4f4f6040b8769e69efdb7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZGLM2289051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b3ad0edefcb523a2a3f4782cb0cef515895e133931ae7fc5491f0a9ce22fa1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZGLS2297717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e835e1b16bcef2859db1a1efcd22d372be220991a284554d36b97a8760b9aa3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZN882276261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d81326714ca98124b2b3b19914bec1325140f266e83ceb10b2d8087397b9e1d. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZDQH2264761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d84d424df09e2bf1445e1dc368d4845254bac32d09ccda57cfca1796b831ca. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZDQH2264987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d380fa224f4403c4b473f0644edd99b25c3f98342eb9645db68df239da4d6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZDQH2265518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f32430e59459f220e9c9cbcb4b9cf8e41cb08ab8048fe6db34f647067ca8f8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZDQH2268866.
Popurrí Yorkles: El burro Loco / Son de los Tlacololeros / Los Diablos / Vibora de la Mar
La Negra Catalina / Juana la Cubana (En vivo)
La Negra Catalina/Juana la Cubana/Juguito de Piña
Mi Cabañita/Ya me voy pa Carolina/La Princesita
El Gavilán / Las Amarillas / El Poquilin
Mi Chacahua/Rosita/Ya Me Voy Pa Carolina/Mi Cabañita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ed08aaf717f29039f932fde39b2eb3cc70520e9108977a1b9246eba9705dd6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDQH2507394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1162689d7c369d3d1008ddc914712ef4a7d47f29b65a71ae2b62543e99083d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDQH2525293.