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 0x2276071e5dc7383506c2803d60b5d92c9c4cdcea22cb48166b962756a265fd9c. 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/620fe5ea-d475-4a5d-9dcf-5aa916136041.json and https://artists.proofprofile.net/proofs/artist/620fe5ea-d475-4a5d-9dcf-5aa916136041.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 0x8fab323f4faf294d10db135eebeb9ab064b4aa21c570162c5b03f63e1f27c312. 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/GBLFP1885366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5567aba77b4dc510da0f7b5331c36a72d08aa7f992506dfe2d83d7d21beede1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1885367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7628a822694c5ffcab1d54c5775f0d40cef24ebbce07cb5c7182baf581891b2d. 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/GBLFP1885368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36380b42017f46f9141d343ba43f03b9f54ef1f91f8e72038427350531fc525c. 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/GBLFP1885370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64b433a04db503958f7083f35a2c66ea8cd7a0c07dbd3657e04e81f6f7069ec. 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/GBLFP1885371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19dcfb8ed7a23ae09498b22409a6babab286488aa9f20606e20ed18822c204. 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/GBLFP1885374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd112ffd515dd70c9f91bcef48b5d4740befe9f73a5655474cba00f5a9b94be36. 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/FRX282461243.
vanishing . (remix) [feat. Jamilah Barry]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5cdd9cf0930d12528c87b340bba834f6acd9d4e13ef5041276baee03dc1cb1. 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/QZLBC2312683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4e26e3376b0e1c03142febd5c6cb465f20a4725306de1e7b7cdef1a6d0ee22. 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/FR96X2369668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce694c4f0bb1a32f0f013031b589bf4715bc2087e057909d8a86a1f31e484393. 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/DEXC82200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7518bd1621baabb04dd2ef34ed693fa9e7ed8f5313496f4a2c5982027c897a. 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/DEXC82100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ff93c5b1d0f567273103614bce02cd78795a14d35a9989fc9d128fee2172fb. 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/FR96X2111657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67af7efce19031eef9b0f44c200dfb1b9092a74912a8d2b5e14df0ecb66a4b1. 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/FR26V2038331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478ca0620a38c865aafbce00f8c292537b0ad2d15edf40b8c97f0b889b36d1ac. 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/FR26V2038332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94bd3b9e8e80a7c68915afae3742db7ad1fbc362e332782887d2c992556d6c9. 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/FR26V2038333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cf617691761ea03a66573ebbf23176f80c70302cf79f9a99973f9056a1cfa5. 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/FR26V2038334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef486a2f49572f2a4b31afe36edb04aa0b3ca3896f416e4d0ce57e46be7aeac1. 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/FR26V2004371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0006f2b23d2ef1640c9b473a938f20cd4aedf57f3153ba21fbaca66362d68c7. 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/QMFME1965019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2520369cefbfa325440f70f4320bf6b6fd5ab621934bc1022835838b03e1ce. 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/QMBZ91911977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7c9b0aa5ddf95d20b89447496aacc8aa69d092d4a362a3d54f36592a1688aa. 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/GBLFP1742728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670aa85fc2076fbb12c806f826af4f7db90010a48ab181a9bedb44ed963e1f4e. 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/GBLFP1743474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5619a8c7c2b2ecec8aa9f4b553fc8827aeb525b951ac22472de7a5a815ae19. 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/GBLFP1742736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5215e6b08f6f4a46c53bc0d9134e8533a1918a193c338c3702e47f944c108a42. 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/GBLFP1668103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcc72fec12822f476e5199dee1d20a11f765274630c0a41a805370ffac42894. 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/GBLFP1741519.