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 0x4c5624fdc541eb2885110e2dca680555680635c8977bb28462c28a0eb7ddbde1. 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/3cb47200-2c54-42bf-b7fe-7eed660d428f.json and https://artists.proofprofile.net/proofs/artist/3cb47200-2c54-42bf-b7fe-7eed660d428f.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 0xf4d0e1f41a17b89cddd0338824c4b8e2508d2d8c147b60ffd0268e1cf264336f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2353247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f975e1a24da35ae8fd1aac6c04676b7f57baa2a9c03edf98506eb32ea14ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2466673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80b22da1b67e0c0815515389cc8501dc1cf53b774398a30188241f3bbf43ac9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452429344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010dbb1e22320e0926430291a63bf3bcd2af3a66206315ef568bedd7d5b03ea9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0P2387996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4ae312aa68377b0f90fab519a69621bc24625d2a7d8e6f529f033b04308710. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0P2387997.
Ritminho da Marcone - Deixa o Corpo Balançar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe856fcf598b0a011f59490be6ba27f60dcf7ee093c3b08935afd3f49eae996e1. 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/QZNJW2450826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5732292b9e0f1636144feb4c2253ce71c66f5d31b45332373fd588e1bb23aa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2465798.
Eu Gosto de Mulher Surtada X Eu Gosto de Mulher Brigona
As Mina da Alta Quer Sexo Animal X as Mina da 5 Boca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9f894081ca34235a010929cc521d199045e0ddcebd5f38de232aefa333c2a6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5AB2471427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd6667b6250be27761ef1787876447f9b12522c23e5083f15ad2895330fe6d. 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/BCBKD2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61735664912197b5eb4c230f02057f5759a622157ce74acff472aadf83b13e4e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2396031.
2 Horas da Manhã X Pock Pock (Remix Arrochadeira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55060cb9686b782f7f9fdb56b56f866b6459ceb1b085d62d936cabff106cbc55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2421064.
É Só Mulher Treinada X Furduncinho da Mulherada
Ela Brotou em Caxias pra Fuder Com os Menino da Vila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580f3f65d763315ba77a4f1d2469c9753c1ed968bad55e75359cad95125903ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTVM2414370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19ce1740851a1706d8965b4ee2dfe23e25fa4832d54dec9e7eeef2824be728a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BC3PG2306718.