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 0x050ba659dff988a360f226b4aefa2af99fd4ab49098e787bb9d2a5c2e4a1752f. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c648e6b1-4959-4ed7-a8a3-0a21d6a9f5ab.json and https://artists.proofprofile.net/proofs/artist/c648e6b1-4959-4ed7-a8a3-0a21d6a9f5ab.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 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 0x318d155106cef054538bb9bb3e4bd058512b078fec864a70620711c76a6c3d9f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ESA112446426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c880799933939f977cf1c1bf9002e1c172cb95edf907e1104a0538686f08dd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ESA112444565.
Os Menino do Coroa (feat. Apelão no Beat & Rouba Cena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1490fa51d00ab966e101d74bec5b5147c577adec456f2d54c910b41dc7e136. 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/ESA112442083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa974ded3d161c05ead440fe6b525068689af0982a956f1dfdc44bc3659ae8705. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2282817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2357c1704f9a37b95bc4fc6b3a04cd32289a0f63cbb4902f7dfe6ec0a8a012a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112571547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a46c57199db96189ec60c4cdbfb42a2d38bdd8d5a678c7d678c29bf597d30c. 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/ESA112568954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f99fc923a8e286fefab9739ccab1ed95fd6779b64cd4c06b90850d047b6bc0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112563331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e13caf54941c0a0ab94e66b8f49b67c963a2d4060fca727c33b0957e08f01ba. 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/ESA112563329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ac44c055340c9cac0d9ae327b6edc5196fd0e7265786a180d0867917119525. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ESA112561726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0a2eb1b24c2e601c3e63494867c05b05aefd946a3c28bab603c73b0d546383. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA112560811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e5a84ad5f3b57646119260e43c9615aba85e093ec85875cb9bc6d347ec030b. 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/ESA112559060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d355cf254a3016e12e6fb8c134ad2055b2a008c061ba94c06b4bf34aa1f88e3. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/ESA112558313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9b204ccdc66f2b3b30d674f0c19b089a92c4c4199761eb39bfd8dfb1f240e3. 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/ES18F2400712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bcf3c1ac3d83c627b8f1846b8a2a00a23ff983e5dc72f7b73cbc6932279d12. 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/ESA112456305.
Cuidado Com os Cria (feat. EO GM & FL Sem Estresse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce24d1eb057a9778c4e6bb9553a2c3089452899bf064a32ff8618ff0fe5833a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ESA112452485.
Ei Moto Taxi Eu Quero Que Tu Me Leve no Baile do Jordão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d5f6b4e5e4fb92b2db0da197f7c5f9398d9e42a3ef1f36b13ce580355a05e2. 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/ESA112449057.