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 0x97c64064dc4b63d328162a435d9b5afea18003e2b678e8baa4705c321d1980a3. 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/45e0de5d-6495-47a5-bf63-cb978b174f82.json and https://artists.proofprofile.net/proofs/artist/45e0de5d-6495-47a5-bf63-cb978b174f82.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 0xbcb6fa8510399ca7dc4ca9a99ad94fce5326f3c1bc3ec7a0aaa33e9e3874d7f0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7272400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa54a61368e3031e565b3cc9ab833da4f8880a71656cfda6e6f8176d580d3012. 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/BX7272400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc466cd1c82917c69b710047a14f6e605cd34ea6a3e88ca725fcc9267bb0116. 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/BX7272400126.
Hoje Nós Vai Tacar (feat. É O CAVERINHA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215881deaa4f33773f5b00e0a83ebf86e4e22a504fbcf6c57aa8bf568ece94a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7272400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcd05ab99bcf6293ba54ab35a75b05a9f1d5994b8c7afe3a1c40ac05930c46a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7272400128.
Não Olha pro Lado (feat. Dj Tchouzen & DJAY VMC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9950b15787e1504265d364a390b2027733e6658f07f8b5b7595995f426c417. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7272400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381b972711f3a7f5f6b4962d806476c42bc7d2bb437c5bd9d8f8784ad385c6a2. 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/BX7272400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b5b0ac6f4159c359e09e6ce25791a93dbcc0bbae80dea997d09b5534f534c5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BX7272400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e7bf8a4f7bc61edec180561d56713bcb5ff4385fea5221b0710082f40365f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCLWS2302136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4053edb2257178d587664079603b8d81d0a581dff33c6a05e7f10a4501187a66. 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/BCE7P2400634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf253ba8dfaae5ff2f7fcb8108e2af0d4f7a7086d49356ef6b76308ab0758a13b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BCLWS2500740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a721d7e1046a7bcc1f4b03ab7046581313b252175b156c0a0cf8ba317466e2e. 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/BCLWS2302353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84e9bcb0c257ec36c700793062362995406812daae98c69dd02953ca5395fa2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BK3112500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29028b2db4c0cf9a98df4870cbd8ece858424688e7bdef5273b7c688ab158ac0. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/BCE7P2401345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c89e42a2cc8fa0541681d95208abe482747826feb5b9665109f6fa2104dd9ce. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BK3112400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd807460b0476bd584dcc2d6ea4993cc0403c692de30b7d73a390721e0b680eae. 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/BK3112400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c31aa515f1f22550dd1352728f3bd1fac64243d17a7302223079cc6451f141c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/BKLY42400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f0988976325267765a273b141c6ca0ef235a18ed20e091e09ec868331649e5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCLWS2401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b18a1a854f808c707bc5af527b663c992c8c5b614aac78f50b82ccca701d47. 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/BCLWS2300788.