Dinahir Tostes Caymmi (29 April 1941 – 1 May 2025), popularly known as Nana Caymmi (), was a Brazilian singer. Biography Caymmi was born in Rio de Janeiro, the daughter of Dorival Caymmi and Stella M
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 0xec6882359145d84c6b76c31f34c867d36fab5d28ea0dba7289b0d345e3fafa83. 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/dbfeab05-5cd5-4d9e-a77e-a3a433d1361b.json and https://artists.proofprofile.net/proofs/artist/dbfeab05-5cd5-4d9e-a77e-a3a433d1361b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pot-Pourri: Quando Eu Durmo / Balaio Grande
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 0xba9454ced51c48f832bbf762078d42747de4337b3e876473c6bc256c3f255b6c. 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/BRRGE1300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579da7bae5daad049923430ea39fba99caf3b907c68d3512846741c94cfd977e. 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/BRRGE1300044.
Pot-Pourri: Modinha para Teresa Batista / Vamos Falar de Teresa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4202259da68bcedc1f035aa002ff345b75689a9930798aa7a5fe72baec69fe. 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/BRRGE1300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14bade4c10a5e537228c861421c0592c2dfe9ccd56a0ff18bbf63d439ddbdda. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRRGE1300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560fa2b81e66178709a298813f0e6ba7d1ed2ef5416349ac38ada799d608500f. 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/BRRGE1300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10a8e712b88ac6c176e20d0f16c48b9a6ef71d8ee2ad7b4e989d745817ed48. 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/BRRGE1300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3ed55d84f60e2eb32f267e09c919488c4ad449c89f41f35d13fa8aad6c8cc0. 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/BRRGE1300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f25af74c64c449e096b7d668712dd896fbadc0e65c1d4b300f871a0424c0fe5. 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/BRRGE1300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154df74d982e121514e182a1f2744125efe02a4205ca0105172649af243a328c. 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/BRRGE1300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c6a18086e22fb6c353e9df299a6080ceeeffb724004e4e1423faec0fea5279. 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/BRRGE1300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5338df415d371ea92bddffaee0d9ce13a012c18404b6680f8c807ca9f7c0d40. 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/BRRGE1300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b6e3e7cce7a9dddbd0f67c11ec18492984b3ddb475400496aea2efca1a071e. 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/BRRGE1300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f44fe27e395efcdae3e9d23b4761a1aeffae87f39f0da95f0be8b3b291739d. 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/BRRGE1300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89933534339815f36d194bab0d47929559c2481962f1167c86791ac04c91ae6. 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/BRWMB0400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7b22b0fb7646339b5d234d60a1826afaba7f9037ef971974ea6efbb977ec48. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRWMB0400044.
Dois de fevereiro / Trezentos e sessenta e cinco igrejas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfac859c2b6d447e171d54e42c833f1fab29b50934cee570f47d1db529917da. 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/BRWMB0400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e54e42b16ed73cb0103dc878e9e6ae7edccc71dabe2915fa25da52f98e7b51. 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/BRWMB0400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5a1c77c8b671aeb34d45f83c07cde9b8021482f7ac326b325adf52329b9bf. 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/BRWMB0400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd11844ec6c7743498697fe7cc462806bc78acc0400f5c4ec0bba99817ae36d. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BRWMB0400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3fdf6b860bb5a855768aca4e747d315cd897dfcb470a68469d50bfd3d5da0d. 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/BRWMB0400041.
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 0x5f7d9d1ffef72908136bd6c99f3a77c376e6cdf2a6c62ddab0446c2d3120fe62. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRWMB0400042.
Requebre que eu dou um doce / Um vestido de bolero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9949ecf43bd04cf933c5fec1e6aec5d55a4f476fe73bc2f9a053ad487cb3b84. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRWMB0400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a492a0d06dc955d89441d54aab10a6d1ab9796405a00a771de332bf6a50134. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRWMB0400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878c17d1c117be44850af88d8f4083199b820ab9391f56e6e9bc1466cd35a6c3. 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/BRWMB0400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd346c550ed5955ba3258d065a9d805894bed0430d9d0e4f9d1faaa8bc62141d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRWMB0400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a646ec314fa0b889a4d13e732f3114f6c510ba91e25d7c0a2df444a766fe9c. 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/BRWMB0400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5beb512ff911fb6d884ed85892aa26f547b6ba913746bee589a369d69f177fe. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BRWMB0400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe313103056bebaf5fbd64805137d81ea5c995a1ecabfc34a8d9961db744eff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:58:04Z), 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/BRSME1300923.