Agostinho dos Santos (April 25, 1932 – July 11, 1973) was a Brazilian singer and composer of bossa nova, MPB and rock and roll, active from the early 1950s until his premature death in the crash of Va
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 0x5330555f887938dd91bbfdd8ff36ac014010ee4857087855ab50d9c2c2f71291. 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/8d1df517-276b-498d-83f0-4c638c26cbb0.json and https://artists.proofprofile.net/proofs/artist/8d1df517-276b-498d-83f0-4c638c26cbb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Antonio Carlos Jobim e Fernando César Na Voz de Agostinho Dos Santos
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 0xbb72006f02fdd66de8a56885decd03356c48113ee17d09e460e9582f710e2c92. 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/FR6V82252334.
Agostinho Dos Santos en Uruguay (Ao Vivo)
Os Grandes Sucessos de Agostinho dos Santos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469aec42946f4688ea67379668d897d43403bdc6ab985c4c98e55758e88ee0c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NL3M12410837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f20e6571f4ccd67301a8502e6b18bd186cf3d82c0ec1eada1771fd90c7923. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6N21447001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a6df988159e750fbc835372cf41974c1f71a0a718d538e4d3e8a6cc027549a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6N21447006.
Antonio Carlos Jobim e Fernando Cesar Na Voz De Agostinho dos Santos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761570dfe2251daac1b49486320f3eff24898c734194e84e92afb1b3caad687c. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/BREMI7000126.
Grandes Interpretacoes De Agostinho Dos Santos
The Music of Brazil / Agostinho dos Santos, Vol. 1 / Recordings 1956 - 1958
The Music of Brazil / Agostinho dos Santos, Vol. 2 / Recordings 1956 - 1958
Antônio Carlos Jobim e Fernando Cesar na voz de
Crepúsculo (Famous For Hits! Bossa Nova)
Samba de Uma Nota So (Music For Dancing, For Listening - For Your Pleasure)
AGOSTINHO DOS SANTOS - FOREVER WORLD HITS (BRAZIL)
AGOSTINHO DOS SANTOS - I LOVE BOSSA NOVA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6786ece6b30376cb8569cc2866f58314a1d80e4220e93d4326993afb573eb854. 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/BGA261853911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73027ad9d8b0d9c9d5ba26c02b7302914521d45f4a9cfb3b0b7435708eb07032. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BREMI7000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cdc9dc5531e08a3e2e7d37d39e057bac0debbdd76423e2130dfdb14aeeaf62. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBBLY1102258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c4c909adc8260522104a60d9d7546214ac9d533873ea0c36c1d0715527bdc7. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBBLY1102259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee319b5a68d494db4582e9dab147567b6c8207f3dadd89a397e92950effdf8e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBLY1102260.