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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07edfe548663d7233cb0b739cec901d8dd0a369375879e15584acce4d9f11a22. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b4395bf-4466-45c6-a71e-2ec1a6596a3f.json and https://artists.proofprofile.net/proofs/artist/6b4395bf-4466-45c6-a71e-2ec1a6596a3f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31e7e6cd438caed4cdee0b8d96c8133f9b42fad71088ec91a0286a42e7d293b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZEQU2073657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d1e013162d4f78c786a0b9886fe08909b8a06b9a6ad37f97047fc0fc2efb9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:03Z), 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/QZEQU2073661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e91ab7d7e6dfebc784b78981adbf14669f455bfc57e1b41e58810894a536827. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZEQU2073663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511876b6089154bece4f1f4cbe175c8f5079cc5b9360c30e2cb23fc07e3b2bc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEQU2073753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1e55f854045f08dcdc7e38a5db630a5534cc958c01d8587f186ae8ca628d01. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEQU2073723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce0e7891b09da124f405d6cf1a0a84218416449fd263fbd68cf767815e3bde7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:40Z), 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/QZEQU2073726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda645b0c0f4f1516e031439a041ce5b305f8c10138f7e54b308855d4e5046991. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZEQU2073728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1c9b87e0c1b78dec9e39665f002b5b200b4747090725d6f3649d3c280c753f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZEQU2073725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaaeca8b580a668bce277d0e4116daeb57bbef5598ffe120ddd6515cdab523c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRESM0400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d45cc2e25e4c65f1ce01578b6cd742e937f9fdf9ea437617cd9a0801326f4fa. 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/BRESM0400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24392401ab230308c2f34b931b4e387dfa8e916c86b92702c160e2563f047cd. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:03:01Z), 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/BRESM0400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12a10e2cd714a464f76f276ad100a587591631265b54f494f3deae3b0927ad6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRESM0400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ea7d3903c6c4afcf4e394ba538ea5500375468d1d2af4883be570097467b65. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:38Z), 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/BRESM0400224.
Pot-Pourri: Dança da cintura / Som do amor / Dança da ondinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf03e259cd98e62cb4042a5900f4708f760cdd4332ee2e3d9811c3057d359bc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:27Z), 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/BRESM0400227.
Sertanejo Universitário, Vol. 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cdd331aec846e304a8a73bda2c92a99dcc35c2c09ca8edb18936f9f8bd0303. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZEQU2073771.