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 0x0319c9452986b19875005a06a498e105627a41781b57322d0300323a8250d61a. 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/b5758efd-20ba-4c6d-bc0f-282b7d7db6a0.json and https://artists.proofprofile.net/proofs/artist/b5758efd-20ba-4c6d-bc0f-282b7d7db6a0.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 0x277602fa227256dc464e6717c9eb1488030443c031e34d4ba0931989309ab6b6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCADC1771970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2471a2b687242ce16bf55ba901193ec7972668b6ab8b6c8e4be5aee9b8843. 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/USLD91716882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c630f22e1b7bd885cccb7a818eae182e5e1a0b0be43eacb9fcc8cbe6b4c5b73. 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/USLD91716883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62657f3a84cf0797a42af29c9197d2bf2b9e079c60911fa5c2f6073aeeca041e. 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/USLD91716884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479006e07e3d5487164d1e312165dca08997d4e100856ca739b1d13183b8654c. 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/USLD91716885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d444589c92266954a8abbfeb46c0ebe8f347b225aafd53b5f6eebe4631f0307. 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/USLD91716886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633a8d1dafd48d4afbe91e431ba1799a2a88d24c1f57333a3ce95b3866605787. 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/USLD91716887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa7a03f2b36c7aebc8b25595ec5357efcc6fd204cf7fbe9c1783283cca01740. 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/USLD91716888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb624d4a8a6960bb1a15e06028b9e4bfc14d5731de5d7abee81d9252f8206fe17. 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/USLD91716889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbec38cb3f4d8ef1add4ec65b42a514abf24fdd5eca9378bc91f3f937b9a4e2. 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/USLD91716890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73c58fc56a7f17e17479c0875b5998750e0c43743d63e881d539bce28b4201. 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/USLD91716881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6f4bc169cdfb1605a26ef430063b49c4fa0c602af60600e74f3c31dad2d23b. 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/USLD91716892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0011badf02a5da64e8a47101e039b6025ffa814602ed732a34a2ca1c8202c. 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/USLD91716893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd950d55e16f133f98dc69e3a9478e89a41a1d926eb7e0e5d2bdc163eb5e15df3. 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/USLD91716894.
Honey (feat. Andrew Garcia) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac89032687686fd8ea13f22ccb8d877e586e5076b57a77a62136a08ffaf990e7. 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/USLD91716895.
The Other Side (Sza & Justin Timberlake Cover) [feat. Cliff Beach & Orlando Thompson]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda47ec3779ef786e033ad900b00f9b59e2d525d3d2fbecbf6479805fb3f30981. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USLD91725966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101fd041ccec66878bcd0b214beb623ad5ab28415c27776eb1ec78c87fc02b99. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:48Z), 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/USUYG1331428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee293f692abfa7ac00e21d8570dd6b79c697501a39cda98837e7440a640bdf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USUYG1364698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d29f7ba9e89e05b4ddfc5c2598e2a1d4667358b24257b11167b61bfab85c9ea. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USUYG1378604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27162a8aa4313191f2eafff4cc03fb3222e8727c239881fa36c0fcb98407d908. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USUYG1413470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11710402badce3ee87c3647d2347793b26fe9e18b8187035020881d87b3a7cf3. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USUYG1423465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8f891b532c4be72c834009c2cb985625523b0680478867109b64bee5c5c1dc. 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/USUYG1426567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65028a602c7c25a1a83a86be3f9037015b5829c91ea27f6b95c786d35a3775ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUYG1426574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2767dd5184e46769bdcfddbb53cca9d299d608bb43b7a70cfaaa255db66a73d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USUYG1426575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efd46aec0cf1513a573c1582d5e805746caa10788a4e32a61822c483cd0e98a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USUYG1442971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eecc31e34722f576b94d813e12ebcbab68ec7e9fe8ef79fbe390b1a0b6792a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLD91745430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4624cd9cb25848c3121ba0f5e45424cd226751dddf43b3ae58e6c34c39a3367e. 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/ZZA0P2410142.