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 0xc1a85b4e12c2ea0638341d03de9af9603176c8ce40d78bfe6f25e4e5d71dcc27. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aa3ed90-c13c-4473-bea5-f05a088d96a4.json and https://artists.proofprofile.net/proofs/artist/6aa3ed90-c13c-4473-bea5-f05a088d96a4.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 0x33f06b222793be79f693ec9aff997f083ab07988b1b3e27a4d11c8d26b93a429. 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/TCADW1897380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e147704f07cd2aedf82ba0671c4ca96ff136fb19df388776b33dfbf5bb9db. 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/TCADU1852908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78458dd8b9fc4707d057f94b8db42e6e1fd2b2e62282bf67d56204cd286caa20. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCADW1897390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d59fee2f58cb327c16657484b62dbc92793b87a348a359be5e93c79ef41e69. 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/TCADW1897403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74744724a12b8ddef1a9835f6ba81d8f68e4b4d97658592b0ec49f652aea19d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCADT1849122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9219624acb2514599d0f2ae6337c8b2ccc1a487f99d5111a1962fa48fc6d5994. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCADW1897377.
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 0x8ddc242c40e4503b4686c1d3284910f0d614fd5de029c0ccfae15501210fb9a2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCADW1897385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ff3378c5b99c017c84d1cec4286a93bb98223961075595741082bb3224a199. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCADW1897392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fe7f0aa933d3aa40ffa347de144b8ddc9073118cd588f33853056c01aa9d27. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCADW1897394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca004493cc4304e96cc53272466b9bb57fb81c8964e9b5159ebc7e8a5d6323f1. 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/TCADW1897395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2d2704719a0bcd9c8bae164d865c15bb6f68fabcb80b550cdd30cc42f2261f. 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/TCADW1897396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771722bcee81e4d3f820cd77eb8baf9f7d2f365c9a671a7cfae0297d91a88d31. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCADW1897398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed813d26b5a29eaa0e54a01b97914c5dec470fa29f8ef53388c03d336d93df. 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/TCADW1897402.
24K (feat. Mogli the Iceburg & Indie Tribe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a12dfba79a6d0c06bf9f7d2bd13d81374a822156843b87073a587d342e20bd. 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/QZES82153709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebc2ac65afc059fc0615e1695a8cd6491405bac9fc0fa1316f43b337699fcc0. 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/QZHN92258542.
Home (feat. Eris Ford & Mogli the Iceburg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37af174aad825839681edb4aae54d981e779fffbf675f79a4bbaf21bff5843e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USUYG1219020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9dea2322dd2b9f3a3bc1c1d7dc6885a9e8e7680a0fbdebbf18eb39508eda41. 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/QZTAS2354786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03666abb8d3bf33af281675bc790859ee840f776c04a3810488c3b0e1ce9107. 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/QZNWR2342080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea9866abf2d72f18b7bd951aad6e538970e51a978d2ae8d8a7ec33e69d3e29d. 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/QMTND2100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4b4b9b0c131621e6ee4d0312224743c106b906c0125f07470c60011b227969. 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/QZES62182781.