Bola Sete (born Djalma de Andrade; July 16, 1923 – February 14, 1987) was a Brazilian guitarist known for playing jazz with Vince Guaraldi and Dizzy Gillespie. Biography Early life Born Djama de
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 0x15a88569e2dbad6f378d98f04d18bbceb735fcbdceb9107999027dffaa054ca9. 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/1f1471a9-b8ca-4544-9564-2414d5f81baf.json and https://artists.proofprofile.net/proofs/artist/1f1471a9-b8ca-4544-9564-2414d5f81baf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samba In The Perrotque! / Brazilian Bossa Galore
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 0x3e2459bdb3536789ee16bf895c2d96d6cabedc36b0a077e3af88f016ab1762ab. 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/QMFME1945413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0089b945874a0ebedf3ad5d59b138926a8f47361e222f9a883158ee0980132a4. 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/USMC10500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eaf1f1226d324f6678a0b926c7bdb88b75e75a919dd6ab7e6c5dcb081f2f13. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:48Z), 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/USMC10500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe5a01f5674e27a8734d29941f4ef6edea0e3d93033fa5699ef0ad75ec8ff3b. 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/USMC10500340.
The Music of Brazil / The Guitar of Bola Sete Volume 1 / Recordings 1957 - 1958
The Music of Brazil / The Guitar of Bola Sete Volume 2 / Recordings 1957 - 1958
Piel Canela (Famous For Hits! Bossa Nova)
Bola Sete (Five Original Bossa Nova Albums)
O Extraordinario Bola Sete (Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90659514c1de2fe2bc4160aa53f29a2e852f140e443f0099f38c69471f8d9aac. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:37:52Z), 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/USA2P2139586.
O Barquinho (Live at the Penthouse 1968)
Samba in Seattle : Live at the Penthouse, 1966
Samba in Seattle : Live at the Penthouse, 1967
Samba in Seattle : Live at the Penthouse, 1968
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5ccb1b6032b94ece3c1f4f2329c7c66d793b979f71bddf240b86b815fef4de. 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/BREMI5900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f7ded93d2f76dcd20b6cab07aff3e102615b6df5302740130ad730d9412ac. 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/USFI86300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e419c95a08bb4cc957da7fe422b80d6b936d06d3b1a03d4864210f00e35c5. 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/USFI86300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a3a4bfb3568d491ce30e79554165847a8c7c6fc1b81bcd11e189d6f4c0e3a9. 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/USFI86400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f98a695e42c8ad98f907dbd1c467404a659b3c166e45720d6d3dee8b61fff95. 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/USFI86400048.
El Matador - Live At El Matador, San Francisco, CA / 1966
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00efceca8503c178cb52c0e7e44de35da7c81201104d89a864bce838731d0ee7. 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/USFI86600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f98a695e42c8ad98f907dbd1c467404a659b3c166e45720d6d3dee8b61fff95. 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/USFI86400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e419c95a08bb4cc957da7fe422b80d6b936d06d3b1a03d4864210f00e35c5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USFI86300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e71d26e31c7f24564353b51a3b60630874a16419aa2d4ada26f2c982abae799. 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/USFI86300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae19e9eec7990cf08b4d796d14e44eebe3779a65590c12b4c5875c4deb75a073. 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/USFI86300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f7ded93d2f76dcd20b6cab07aff3e102615b6df5302740130ad730d9412ac. 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/USFI86300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd32cc37798a98f075221f16b74672d403bf786d1938ad79af1b555f72adc55. 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/USFI86300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e419c95a08bb4cc957da7fe422b80d6b936d06d3b1a03d4864210f00e35c5. 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/USFI86300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00efceca8503c178cb52c0e7e44de35da7c81201104d89a864bce838731d0ee7. 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/USFI86600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7556fe28d79daad0b6bdb1370231c918577c8b26c9ed4223c6813943fa9910c7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR4EO1500018.
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