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 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 0x41e5d98e99ef21d87392e8cdcc1ba6814bfa2679e3b405097b60729504e9b7f9. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25b7b1e3-1f97-4ccb-b577-5c0c58db9aa8.json and https://artists.proofprofile.net/proofs/artist/25b7b1e3-1f97-4ccb-b577-5c0c58db9aa8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
O Som Da Natureza: Relaxamente Com Natureza Musical
Relaxamento: Sons De Vento E Pássaros Calmos Para Súa Meditação Matinal
Relaxamento: Sons Serenos Da Natureza Para Relaxamento Profundo
Natureza: Sons Relaxantes De Ventos, Pássaros E Floresta Para Relaxamento Total
Natureza: Um Ambiente De Floresta Relaxante Para Acalmar A Mente
Um Plano Lofi: Música Lofi Calma Para Ler E Estudar A Noite Toda
Um Plano Lofi: Músicas Lofi Serenas E Boas
Sons Da Floresta: Sons Pacíficos Da Natureza Para Relaxar Completamente Você
Meditação: Uma Meditação De Cura Com Sons De Tigelas Do Himalaia
Frequências: Tigelas Tibetanas Pacíficas Para Se Conectar Consigo Mesmo
Ioga & Mindfulness: Uma Boa Aula De Ioga Com Sons De Tigela De Cristal
Tons Pacíficos: Tons Binaurais Para Acalmar A Mente
Música De Chuva: Clima Para Estar Em Casa, Vol. 1
Música De Bebê: Uma Atmosfera Pacífica Do Oceano Para Relaxar E Dormir Na Soneca
Vida Na Natureza: Um Banho Tranquilo Com Sons Suaves Da Natureza
Música Para Animais De Estimação: A Noite Pacífica Da Floresta
Música De Bebê: Música Relaxante Para Dormir Bebês Vol. 1
Ambiente Do Bebê: Sons Relaxantes Do Rio Para Crianças Com Sono
Ioga Matinal: Relaxante Música De Agua Para Praticar Um Pouco De Ioga
Animais De Estimação Felizes: Sons Silenciosos De Água Para Gatos, Cães E Outros Animais De Estimação
Animais De Estimação E Natureza: Sons Serenos Do Rio Para Gatinhos E Filhotes
Mantra De Meditação: A Melhor Música De Água Para Meditar À Tarde
Playlist De Spa: A Melhor Seleção De Sons De Correntes De Água Para Relaxar
Ritmos Binaurais Da Montanha Selvagem Vol. 2
Chuva Para Dormir Animais De Estimação: Sons Relaxantes De Chuva Para Tratar A Ansiedade De Separação
Chuva: Configuração De Chuva Descontraída
Cão Celestial: Mensageiro Alado dos Céus
Serenata Canina: Notas de Paz no Reino dos Cães
Tranquilidade Peluda: A Calmaria Pós-Luz
Paz no Abraço Peludo: O Suspiro Pós-Luminosidade
Canções da Aurora: O Silêncio Interrompido dos Hounds
O Chamado das Sombras: Cães como Companheiros Noturnos
A Aurora dos Cães: Despertar para uma Nova Noite
Ritmo das Sombras: Uma Dança Silenciosa com Cãezinhos Travessos
Melodia dos Sonhos: Uma Viagem Onírica com Filhotes Aventureiros
Lendas Latentes: O Império Emergente dos Sonhos de Ossos Caninos
Latidos Lúdicos: Os Jogos Caninos do Império
No Compasso dos Patas: Gradualmente Fechando o Mundo
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 0x43fdc6fd3e1a85b7dd41e1aa39b7caae6824b0ba5b737a306b44d2df39b58ee3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352865 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3ccc4fcdcc40d921923607966d78c5ae0ca82ffc9f2b1133610828ac3d8692. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352867 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845c543d5d6507b56ad2b5100b33a1076c966db773d44fa418661c97c4d807e3. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352868 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e7a6b7867056a039e4b58f63728246ed2b38c57850234d578439281e16983. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352869 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f41a567fa431901870cf4fcc6157c6e5492a56b8f119f1c02bb262d913f24f6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352870 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047cab64f6a2f66a476e313ecf860ad39b4426f65361782ca322c1f8297670ba. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352871 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b8b1138289a1ad1939c9668875b2f5058a6648494fa197f993fcd2f319d3c. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352872 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80180b8b261e124fca2ff9284b0e25c4515a99c1077369a2a443d2c241873f7f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352873 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874e6dde5a61c156d4b0d5b15234bf9d3953cd26f2639b3c182d50d0e2b5ac15. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352874 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bdb428f087f42e3521d839a0158f777087e5a51b17c0c88e33a86d74a66e0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352876 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e9cca67bb5fe326b2581cea36889877f5e64be2e5e27494596f537b3abc4d2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352877 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad2627c9d284172f85cf5aa4bb7a25f1824e00ed925c005488eae83036b9e8c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352878 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe641d1ddeb1e43231d8ba0b31105b5ef7641dfbc40fc65c638855fcc32fe34c2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352879 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6469c3a32fa1db63e300913ac98bfdb04c63af6c17217df70516dfd9f5b8e80e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352880 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c703b9f6c3ab8d9e1fa9974a9e3a9513b51f2644cd9a63f07ad6f4119c47d. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352881 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f2a9d349a20f1626d4669fb2e7db77373dc3e62d3f09041b0ab21bdeb5bbf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352882 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce20cfce21333e494ae4e1e511c9b1090c10c9430601e3a811cff96f35cebe0. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352883 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1481a827cca1d462b209ba3a25c2f89b28fcdf62ff54e8c423574d4b76b06472. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352884 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed9bf526b7c8c75c592b72f1c16e9bc25924a94c35e8ae9a05667493c195c06. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352885 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1ca73a2e92bdb1f3a7e4c7fcadcd6ac89b2d5a94052b1b20c31741522566d2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2352886 — a six-check JSON result.