Maria da Conceição Evaristo de Brito ( ; ; born 29 November 1946) is a Brazilian writer. Her work is marked by her life experiences as an Afro-Brazilian woman, which she calls escrevivência—a portmant
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 0x77594cc1bb021dce50ff0a90d48b739a4fc1bb5f0ccd0226ae6dec0f995558c2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eee21af7-2bb0-4e4b-a747-f74988734cc0.json and https://artists.proofprofile.net/proofs/artist/eee21af7-2bb0-4e4b-a747-f74988734cc0.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 0x633930b89a55365a41a0b4cf27df31b38415f3b6187fe6e5e6184c2c86685d20. 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/BXMNG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7121e2322770ea2bc40e4f2dc8651809d78fc470e08f371657019c3a4cd5c7a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BXMNG1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076e041959c65c1d622aab53cccbf875e58e17256a812c407d320d3151279de6. 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/BXMNG1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0338306cc6b9f3132907fe8e07306cde8e1da6ff75bef13520c3f17438da86. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:42:40Z), 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/BXMNG1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fde448b55e0aeb68534a0e86ce94b0f8447fc1dd93e4d1f5f0bff7621a27bc7. 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/BXMNG1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbef843ed6fd60631ddf54484ffca600996e16e45880a285e08b5b3019f1ca8. 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/BXMNG1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd626ff117f828600102685d707b1edb7c148d334915e7d9924cfca7fa28932f1. 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/BXMNG1900008.
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 0x75a16f79d992fda93bdd64fcf97a648117ccf1992a3d8a727f2ef3d0fa87d959. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:21:13Z), 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/BRRGE2010978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbab0a0d04dc5a25fc05c2bfbad2c966f401a416d631d88bbac7e2c664efe0. 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/BRRGE2010646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8005a5ee4cda905dec64d7035cc4d8b1a26b4d0c6769a74f6977fbff1856f01. 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/BRRGE2010980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ccacd7a19d6f56801f22351d57935ae3fa99a2c74179dba1a7b26f4b8b5711. 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/BRRGE2010982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4044934e193b31bfc47ba2ed3b791cf9342dd8d69390a3bddd0acf649d0fd3cc. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:29:30Z), 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/BRRGE2010986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035eb0291a760729d99e4ae8ed1e6da12ee201e4d271dd707761bbe751d771b9. 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/BRRGE2010988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20eab899589f879ea59c66b25829f100a449ffadc7adb37f2a26ad8b360118f. 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/BRRGE2010990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b694d01236d18046a2e856c73a303fc9fb7b2314b693addc73128188c734880. 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/BRRGE2010992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccec74d5ae6024391e95eec811d46871d6a6717d21fd67695a59057422d1a30d. 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/BCLJG2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453291404d0b36b8a97a1a15b1ea9d96e0276aec8a1aa0c68282dd8941f368fb. 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/BCLJG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4100097dad6c0dff6dba87e414282be5dd1d1d9b04ab4761cc4b1c4e99c824f6. 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/BCLJG2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d8409a33ac04c680f8f5c493ffd75a66fae084f3908986229c46ce06d65f2. 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/BCLJG2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74247b9a70ea3e1118b4d159d215a102c13e53cda14296f249e6d86cfe635af9. 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/BCLJG2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a436048aa521cd22a20ebf4167e88a17d462692fd9ac0130522d1f67c6712. 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/BCLJG2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9349b3a3b597e7af758167d781f6f0d1bb88b86057d5443fbfcc2de431b9fef2. 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/BXUEU2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c9f5447ad63b6a9dbab0d05b52281a844039a2fc721a3e3a366e95743f03f3. 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/BCLJG2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547bf96398ae9aba5be1e4151ea38effef1f7c17f5a162d6ac83317f140122d1. 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/BCLJG2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49537452e817c3864c9e8e23d5e6a45b9a509c804e374541ef20680e9a1618. 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/BCLJG2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502b2ba0cb3ecff5474f8e334862160ba47fdc76c944804396afca00046a5bc6. 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/BCLJG2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02609921f6b951e8491424e763b723f1ad1c5195a27aa69dbfdb67a7ae97046. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCLJG2000007.