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 0x0ed2ba9340bdc4ff643fb50ca209ebdceb7031ecdf8f0543a4dd9f266acf86e5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89961ad0-5a0e-451d-ad13-3406b737cb6f.json and https://artists.proofprofile.net/proofs/artist/89961ad0-5a0e-451d-ad13-3406b737cb6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
As Lembranças Vão na Mala / Minha Boca Você Não Beija Mais / Um Beijo - Ao Vivo
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 0x464ebec5ccf089eda19a268e8b34d87703b51d787a5cfd83cb48d0da19ae2e8f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZNJX2191632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1461f4031b2aa144cdc664ca557b73a914003bf56eb2ce3f408b091d8e557e29. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2111590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa8aafd53b63c5513fc39eee97f4267afbc1ac07b23f9aa494dd8a1f1d93425. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZNJZ2227881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114440b82d85024e9e6a0ddf7a3ab6a3be96561cee2fbc919593877f8bb2a7d1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNJZ2227885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcaed08d689bba5554ba56d9ec182013969d465ae07e7567d75b3617bb7f686. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BKIVN2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab11c6851cbae4fc39f2a4d5903b9ff207cab46a76f927ca49e543dc2824b0b. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/BKIVN2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b9e31b2d2835739aab03e4dff090580db816010b2cb04c24459eb0a7b6773f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKIVN2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca4f6230e283cf99f7c4e349b8f234463a01332761ee77c5210acdb99b8617c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKIVN2300004.
Alto do Sentimento, Ep. 1 (Ao Vivo em Uberaba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd600f60a85fa8a8f747512315920f9739a242ea78ab33113219b728a6ce7084c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2497304.
Horizonte Azul / Eu Te Amo Demais - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574bb1a0820dc80b89eec0acc47f961bc903f40549356b729d86c059515b3a46. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZGLS2497305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcd17b156559e480e329e76ea111e4b948784f528e775370a7815f8290b2de4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZGLS2497306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afa99e9a8fdffd4bce92495f32c6656067894ba9b6d0d0fea22ce2f20d79f51. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2497307.
Alto do Sentimento, Ep. 2 (Ao Vivo em Uberaba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b4e5dfcd4cb707606978df34253da4496ceb542e2f72b197a2e3214a55d4d4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZW9M2415029.
Brigas / Esse Amor Que Me Mata - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc978f4d015f661f982f3acc2eb590d1ed741e6ee0d1975cc2888c354148f666. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZW9M2415030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a2e35b256218747458764d6ea3cb78d0dc54c18a020324dcfa427391c848c0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZW9M2415031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d8e6e0d3d12817844a541e2ebdd34f4574e2fac94ff972e54cab974edaf71d. 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/BCSG12300002.