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 0x5ea26bf46b218addd6dd73257d1999d17849712979c1228d8f2a24e06091fb47. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8254c7c-a410-4753-a37f-1c327b09653b.json and https://artists.proofprofile.net/proofs/artist/d8254c7c-a410-4753-a37f-1c327b09653b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ponto Pai Benedito - Quando Ele Chega no Terreiro.
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 0x9d36a8ac65c95064e4845184c8e290a8f69d760546526a60ae7611f8cd30df11. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHZ31980318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80210d2c8e35fb3ca431eb4cbb1b048259a89abd18d77a9cfa1b4e231557f807. 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/QZHZ31980319.
Ponto Eres - Tem Bala, Pirulito e Chiclete.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d652fab34add0dab1db774e8eb1bbf14972cee7dba15481dc9af73e9d281d4. 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/QZHZ31980322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b23f2ca019ee3146c3f261de50024a68c3ca3a25cabc960ef3a4341f0b671fe. 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/QZHZ31980323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffa013c8502e949701d1792ba97f4bdff36bae3ca9f2ff8d343610d424f6f73. 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/QZHZ31980326.
Ponto Tranca Rua - É a Força de Tranca Rua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5b683cb325cf552ab22fa22aca857c4f763acbafdf98a6ee6728f5c77ae166. 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/QZHZ31980327.
Ponto Exu do Ouro - Quando Eu Me Vi na Escuridão.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a3adf8b3006331c637a88558bf1fcfaf12ce5700cd99a58200953755a5a1c9. 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/QZHZ31980328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c13a2f169091e5953a377b9e4979307cf8c60bc62a40891bd0086985417176c. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZHZ31980317.
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 0x6eba666c7ef4b80ee6a5869f09967e152a4e327b24c23922d60d4170697c86f9. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZHZ31980320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ef6bef7fdc1a16ea6110f661eba080f01ac626b05f8330da67ce4a35a0d8d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZHZ31980321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedb97d49cc5f59a5c1546a54ce3e7121ac25364a314c32418ed8c776cc50ed6. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZHZ31980324.
Ponto Zé Pelintra - Vem Chegando um Homem.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ba16b622c68b667f70323c07bc277ac0cfb083d16f78040c5453aa9ae540b. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZHZ31980325.
Ponto Dama da Noite - No Seu Olhar Tem Muito Axé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd1670e460161c84877a45ba9a09657d73ffa9c0085b43457e74f9c34ae829. 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/QZHZ31941604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1d6b4d48fa88e5b5d1a6361dd53a23ea75451fa6ae33eba77e357c3596365b. 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/QZHZ31941605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9a9e9b42e361b1f6025a6dcf827a2f1fa463c6afb7db7c0a77a1589bbd7e09. 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/QZHZ31941606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea7e9ea9118020eb2241a14ce926c8eae79a6b9d8dbb06bde3f363bef707fe3. 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/QZHZ31941607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20bb9beb2a0b4e2d8cbab97620ca21a32668a5af823d0f37aa5680cfc6e0d4d. 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/QZHZ31941608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf080a76930781b6d6f42c5cdbf1ac8444f6dd2aa244def21041ec539a400e21f. 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/QZHZ31941609.
Ponto Pai José - No Abraço do Preto Velho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf05df55f25572830723d6938dfbbb444dba4a6c8d5b8a1f86c2852a5f0b0e9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHZ31941610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f4b1820e2f94cdf7b4e7c2fa56e64467b62e2fdd0606dd3ec5f8f5eecbbed8. 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/QZHZ31941613.
Ponto Vó Francisca - Iluminando os Passos dos Seus Filhos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d18c49235196ffd5030c70ddfb4e7747480ef6a4c4baf8ea14bbf84c5e08dd5. 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/QZHZ31941614.
Ponto Preto Velho - História de um Preto Velho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf4a67e771d670a37da92a0772c9ef6ab96693ea360216de5ea73198c0d788c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZHZ31941611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cdca91aab782fa8b5b0803d3cfe50f4ce32a1b4636ef20fe4932742f92b126. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZHZ31941612.