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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d5f3602aa8f5a26cc323435433b85940d11f1cec244839bf961c37adb62e7c. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cab0637e-4cdd-411d-bb68-bf5f6124436e.json and https://artists.proofprofile.net/proofs/artist/cab0637e-4cdd-411d-bb68-bf5f6124436e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Extraño del Pelo Largo / La Extraña de las Botas Rosas/ La Reina de la Canción / Acuérdate de Vivir / Un Amante de Cartón / Yo Quería Ser Mayor / Ni una Palabra / Menta y Limón / Santa Lucía / Como Si Estuvieras Aquí
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6f95c54e5d324ac65c5efc4dabec424fc546908c861a883975ead3a26d0afa. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/ARF109200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355c77097b18315b6c5a7d60e3a76d8aa0c8150f8f5412df596e7aba15b7a9d5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ES7581310093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d2f914bbab82ba9da0347f0f5c2410ac813529c612e352de1fd22de1e42b51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5070300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02bb32dcd9a8a0de06d5b8d370e1730813c89491b442e8cead5c5a484ad4a40. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5070300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6281ec6c24fe1d51de3855b8e8e602dd0817239419520f7dfb6099da59b5a87. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:35:07Z), 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/ES5070300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7711d4a4d3403e1806a59cb2e75c63ad3129adc43f5a38e765687136b1c0534b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ES5070300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd0d93539d50bbe64bff6ebfad4182ceca978986716a0607c5b2daf2c1b2dc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES5070300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaabed68818fcb64885e34423f21205cf6d97dbb19055ae71bb77b2162610f8b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:34Z), 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/ES5070300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d72edb3cbb315458d61cc82dac50f2230fe24017e60a71de0ca455069dc7e8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5070300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcb173626f3a8acbecebf72d89588969f9294f4b17b46b40510bb9689d6f68a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5070300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb075f754f935cdc59f197f046c56de01313e8c6964aaa8a8c33d7cc655779e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5070300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2c1c522f3d5bbb16651afa0b7ee93b103f3619b87235ba03ac9ba9d036b2f2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:16:30Z), 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/ES5070300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03b1ff63f6550a1d0b15f3fced8ed54869ce45958b6aa82b65c0ddc8dc55f25. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5070300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9305c6dc7d1c50d5626245ac4e831371583885193c94cdb5668cd14155b6d21. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:19:16Z), 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/ES5070300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a0467a30db1ea3626439feeddb86a0de6240c7b1221a6f360d59d4c097331e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5070300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d72edb3cbb315458d61cc82dac50f2230fe24017e60a71de0ca455069dc7e8. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:36:18Z), 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/ES5070300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3864c5d36ff291d49d5d04a254f3f7cba2789e271733e0503eab48cff497e6b. 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/ES5070300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89780e072e452095dfbe4b8f408f727e543a22109846d9e4fbf507c6a2361dd. 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/ES5070300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6ad12b601723b249c6941369cb5a6b2cc27672334ce13c211db4c323c19b0f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF049601441.
Una Celebración del Rock Argentino Vol. 5 (Pescado Rabioso / Aquelarre / Huinca / Color Humano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602bee19c670698447a89f0423ee78ca163d9af953c1a447d5454e6bda054db9. 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/QMFME1523176.
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