Herivelto de Oliveira Martins (also Herivelto Martins) (Engenheiro Paulo de Frontin, Brazil, January 30, 1912 – Rio de Janeiro, September 17, 1992) was a Brazilian composer, singer, and musician. Mar
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 0xc1a925654d08737423abd6d6b0d7fb568354d6a37279a7363b9486cf929af3da. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7e44a2b-81bd-49da-be64-e353b0d78dbf.json and https://artists.proofprofile.net/proofs/artist/d7e44a2b-81bd-49da-be64-e353b0d78dbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Music of Brazil / Herivelto Martins /Acorda Escola de Samba (1957)
Herivelto Martins 100 Anos - Faça de Conta Que o Tempo Passou
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 0xd314629bc4cbefdb616bca769d7891fd8fa32fb15a2801d652c357644f787940. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BREMI6800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cbd22d8b23b0ff8fc067c600e310e8d579b69ca28239dd1c22b08ce2420a12. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BREMI4200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75a680662ecf4d6e79006f562983b188f56caf7fd50336c8181770a7dacd053. 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/BREMI4600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320ea4f57f35fb1c7e0f34e7c8275badb247a4598572bb62a592266ec6456a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRBMG5800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062e0283ffb68099795bfa534f1cf19613d32f64f385dfd42841269efcf7d0e7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BREMI9800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa749ad909b1fef4c9381d867f584c1fc8283e7497da3bf3f24575113ea5e34c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BREMI4400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ac872c89dc0961991f5e1a3c3394ba4c7fde37387ff7b7e4c277f3056176a4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BREMI6100740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedd2d122f406218e83a8226edad34da44c8d0ff9273160f66f65874c92871ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BREMI4100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf180ec477cc036fe25677934ff0e5247d86dfe8fa11f16c383c48a152ed70736. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BREMI5900412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48aeb4d549e2f87270e0afa706d253037d7fe317906a8114c3b737e919807b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRMCA0000535.
Jose Luis Rodriguez con Los Panchos - Inolvidable (with Los Panchos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ba1fbe01127a0283d4b9c5b6655b1d0dc5073f3e39c227a9b39673454776c1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLB639760006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d145aeadde2cb976271824f39ed412106424d718c925b03d13106c658ddad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USESK0618135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae513c8ecc8df69c79da99637a6bf90085ecf2f3211887490a9753aa76317949. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEXN82256634.
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
Mangueira Não / Saudosa Mangueira / Lá Em Mangueira / Praça Onze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c0db6fda3566c6b7389a84038ab4b0cb852da681ad2657b375f9f95f591f89. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BRPUI0600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4837d35038a455b6cd8c9bb98d94b501ecc38c1535fb0488f1f06a35b5ea4b97. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/CA5KR1973648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a7c0f77b107ecb18fc3c708840990b8e5891e347ec35f04f7b6c3bca24ebaa. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USESK0618247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f330147f4991f55aecffd577b57331308f71d3aa3a7e5b54d4af96ac7ac776. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USESK0618250.