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 0x15bc4912721af497b02198734ae63fcce0b6cc587dd885f9258f6d11afba0a14. 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/d2eaa6d8-73cd-4205-a5d7-ed3d62e454d1.json and https://artists.proofprofile.net/proofs/artist/d2eaa6d8-73cd-4205-a5d7-ed3d62e454d1.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 0x98023bdc0b7d942a9d0f806c576e8f532c8103988a3a7a2bf4e8b7658b698055. 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/QZDA62594934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ee7d7a5832de2ecda31445e7e6e12c1851450be2c0ed1300f782f521fcf50. 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/QZDA62594935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ee7a097186264c92e9f1102af765679abe1099845dd10fa2502d54130f1d5b. 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/QZDA62594936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bf1f96479c570b5fa0fc5a2a28dcbc6311d5dd74334dc4751ab7159b64c9c9. 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/QZDA62594937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c080fe1bfbb0e32ac331c1346e720e9b489569242da25b455d24605353fc48. 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/QZDA62594938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345fcd9a6fdb5e2e38b75fa3b28e6d2579810710b1742342ad027e79fb200740. 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/QZDA62594939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7cef530a9be672df3a764fd5e3dfc6a9e3c1f37adec066138d9fb20669f916. 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/QZDA62594940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a80f6cdf6b9f42c8628deca7c3929b5248cb04addd8374c35d30f7f1ee57cf3. 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/QZDA62594941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f656c14676df2e03f2b545d80487290444deb52e7a29308f092324e4c3ff0c. 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/QZDA62594942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6752abde465eaa59b0da3a731f4f533f13f2a659e8f5348f7db2606dc0ea5b2. 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/QZDA62594943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25df7f919de00741d014db06a3f9e6084fd4d7c042f7eddacef79d196bc9e29f. 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/QZDA62594944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f258bbe05a8a913c1f155beb4124fa103cfcd099d26487c01e78344aed586b. 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/QZDA62594945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51be10dc72e9a615be007ffbe7632dfbbd305dc16eb17a689a69b41f19516c86. 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/QZDA62594946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc47c90f561c24b48fdbf9a8ec88887a724dd5488d19d1770e989d379525fee3. 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/QZDA62594947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab57366e296f39a8e992e483bef9e06d9a13e6dd9b930c4d3294bd6dd355dd1e. 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/QZDA62594948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adc071eacc3ba7e7c9b7c97c49498ac34c3329009155fc41f91fb941a337889. 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/QZDA62594949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b1b24b898602970952de9706c43e4762a32cf71c6b447d5939d618bb1539d7. 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/QZDA62594950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b775ac4f61f657214ee3e23af6910b695c06c8ccce014dd9cfbc7b0f807412a. 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/QZHN52304737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900a201b4c91396cd07be5a914034437116c39cd36ef64b2c548a94addf029c0. 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/QZHN52304738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02094202505ef92d652274bf611f570ac0ec0405026c47275daac29dc4d66e3d. 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/QZHN52304739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bae77be5c02f22ec4608492e8231e548d57cda8dcd80d4abecaa3f8b20f1c7. 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/QZHN52304740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720fcc49cc05b89cde81ecb9459442d3f6246b0d5380187e6ade3729b693579c. 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/QZHN52304741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e62f7b49898a74133afe0dbdf738d58e9792952033c12af69f7a64e666d8eab. 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/QZHN52304742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40382206713838beaa6462da4e2e9f364dc5d3c71d0143f60e7f9366d112371e. 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/QZHN52304743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63004ec7130edc9fef5308981e38f0dc5c8601364a886a54889d8f6cfeba806e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52304744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a88f1df1f9004783390a754cc141711e925df89b72b75a3a027c7570ae9d38. 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/QZHN52304745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2994e59609aa348d48c7bd78f70e3eacc7f8d2c781e202f2b5b06f01d48d89c. 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/QZHN52304746.
El Perro & No Es Tan Fácil (Extraído de La Pelea) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86298fcc5f0518927df0fa1f4deb0ed00cedc71efed2d686d97e5aa7cfe3c527. 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/QZDA52533352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fbb3d3faa07a8cfe39e172f5e91fcbbe907eb5a7fc7a4b24362581d155c4d8. 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/QZDA52533353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e22fa8797b230eec5f7383255796c56f9ee1796ddacd4984af49e5a6fd9d1bd. 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/QZTB52276557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466dec8861b3300f63a484788ab3927adcd426ded1f3868e3ab99e63e3379681. 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/QZPLR2221922.