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 0xab83059801b1baf784a7e367565009cc9ad7a377f5f41dc7ed2c7d77a5fc7605. 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/bc1b88ee-8a1f-4847-bcad-eee1a7646eaf.json and https://artists.proofprofile.net/proofs/artist/bc1b88ee-8a1f-4847-bcad-eee1a7646eaf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779c9e8c2c25232bdf51fb4ed420156aeaf1997566ed953d4e5baaf107509fe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:41Z), 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/PT9EY2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c94e70e68efd8aff91a9addc126710d62df2a26285aad1a91095bd11197b193. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PT9EY2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779c9e8c2c25232bdf51fb4ed420156aeaf1997566ed953d4e5baaf107509fe. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PT9EY2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1551306fb35eff339520c578104ad195c0962dfe29728bb992ddb5b8e7222af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PT9EY2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00ff6cef30ef2cf7665b1674707b9e329469eb4d045e1a71ca318776de8436f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/PT9EY2100189.
Tou na Moda (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5314b92282bb22ae315fd9e7c417f3989a3e868bd04742415e46d8d44b17a4f3. 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/PT9EY2000139.
Travessia (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Luís Severo, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d65606be80fe6368c9583d4331389f43be0fdcfe1269be052166741c7211eb0. 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/PT9EY2000137.
Liberdade (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf125551a44860095cc35a047635130bff2d1af9645768915215189f122e3a. 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/PT9EY2000135.
Sem Razão (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Luís Severo, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696973947e7b5656c10d242998ae362d05346bf8bf321908840409e1364cb96d. 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/PT9EY2000131.
Os Amigos (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f160a3269138fc7fda040158bace0e06eea6f6b157a432b08f18a25b118d3. 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/PT9EY2000140.
Proporções Bíblicas (Absolutamente à Porta) (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531819a5c854a4d59b9e0c5d94162163c4f89b616884fd6ff65a3cdc767fda32. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PT9EY2000130.
Má Vontade (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7131bf9b2834477b6d797860a7a81e115954235f4176804cb9444cfc3006a6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:01:34Z), 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/PT9EY2000134.
Casa Andante (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048f94e6432045792d5e0a7d9c72806aa57d28984ee8115ca5707cb58125cb81. 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/PT9EY2000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5314b92282bb22ae315fd9e7c417f3989a3e868bd04742415e46d8d44b17a4f3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PT9EY2000139.
Se Algum Día (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca36c9c90ff21d34104e6c422193bdd01296788b09e3ce49a33854d4f1515ae. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/PT9EY2000133.
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
Escudo (feat. BISPO, Capitão Fausto, El Salvador, GANSO, Modernos, Rapaz Ego, Reis da República & ZARCO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152b427243fd04b15bdb8cae842b35850cc9ac547b9f039e1fa25a44523338b7. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/PT9EY2000132.