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 0xb2cc27de30d436893341731890a03a8864296664b11879848c3ce125ec895973. 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/1d27f510-3062-4f66-8a47-8e4c01b6b7d4.json and https://artists.proofprofile.net/proofs/artist/1d27f510-3062-4f66-8a47-8e4c01b6b7d4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Canções de Ninar: Músicas para Bebê Dormir, Vol. 1 (Piano Instrumental)
Canções de Ninar: Músicas para Bebê Dormir, Vol. 2 (Piano Instrumental)
Canções de Ninar: Músicas para Bebê Dormir, Vol. 3 (Piano Instrumentals)
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 0x246ab58ee7469e4bca6e306403eb8f4725c57aa9ff388ba34f2c9c75c431a5bc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRLC32100022 — a six-check JSON result.
O Sapo Não Lava o Pé (Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bd5dd0b447f3eb7e0cd8bc0a5860a5d97a9cecdc7d8344779b5f202d7037f8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRLC32100026 — a six-check JSON result.
Meu Pintinho Amarelinho (Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acf1c85a67073cc8f7b519c3c7bfa658335f105a85d07c2422cbb291af6aa5b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRLC32100027 — a six-check JSON result.
Um Elefante Incomoda Muita Gente (Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02dbb62deeff4b4c70485681a6c05883d26c074caa4e7bd0629d42e8f481fc3. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/BRLC32100030 — a six-check JSON result.
Canções de Ninar: Músicas para Bebê Dormir, Vol. 1 (Violino e Piano Instrumental)
O Sapo Não Lava o Pé (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24bf56b17119b42d183450e566251ffefa450fc711a11d8e237ee39b3101891. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/BRLC32100035 — a six-check JSON result.
Sitio do Seu Lobato (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb93d80a665cb31b7c350297f4638b9a8693cde6d3ef1c73fc98cbc29a126a2f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BRLC32100038 — a six-check JSON result.
Ciranda Cirandinha (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990e15d140ab4bf4e978be94847b2e67a6b42681faa034f5a6de85adf299a523. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRLC32100040 — a six-check JSON result.
Canções de Ninar: Músicas para Bebê Dormir, Vol. 2 (Violino e Piano Instrumental)
Nana Neném (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ed04e651fb2c1bed7408efc838a26155c2fbec3fde20b597112ffb73c6ac52. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/BRLC32100042 — a six-check JSON result.
Escravos de Jó (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36386cf5914b08e45d9777d10e58e5f9805e48eaa564a05279655f37f22b913. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/BRLC32100044 — a six-check JSON result.
Cabeça Ombro Joelho e Pé (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa152e3fdc7790b96a270b18ba29b663f96c4ccbaaf07a8e4d141ed4a377ab94b. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/BRLC32100049 — a six-check JSON result.
Caranguejo Não É Peixe (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc9cf9b6fa389035d836161839b102583373f1ad0a993c5b5468a3897bf5a69. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BRLC32100050 — a six-check JSON result.
Sambalele (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa313e668e28d906fb0ff3d088c6103cac4e2355c7ac458550fbf06b65a093cf0. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/BRLC32100051 — a six-check JSON result.
Canções de Ninar: Músicas para Bebê Dormir, Vol. 3 (Violino e Piano Instrumental)
Meu Pintinho Amarelinho (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1d9e06f6c6500074df9407866a090e3ba51620a949caba67b0fb8701bd7688. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/BRLC32100052 — a six-check JSON result.
Indiozinhos (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13254f1c4b6d61ba9d15d039b12d375226076f2d678456dcc9ef142a16503c77. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/BRLC32100053 — a six-check JSON result.
Pirulito Que Bate Bate (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba191ff71fe9dc9cb2cccf23a54e4756c467c1e31fcacc3fd532563e847492. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/BRLC32100055 — a six-check JSON result.
Um Elefante (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5902170b916d4a105b2f9225f96f89dd9c2e47b1696643049157ba849b893a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/BRLC32100056 — a six-check JSON result.
Terezinha de Jesus (Violino e Piano Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a26c60b56a62363d5b771423a373663c20c8725f4abc99201bf4da87c91897f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BRLC32100058 — a six-check JSON result.
MPBabies - Canções de Ninar - Músicas Para Bebê Dormir
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