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 0xfa0ca966d6f7c3cc8984140a8bc0eeaddd211a87c63d70157fa0326ef3bacbe7. 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/5afac07d-026b-4ee2-a89c-a4dc51a7cd31.json and https://artists.proofprofile.net/proofs/artist/5afac07d-026b-4ee2-a89c-a4dc51a7cd31.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 0xc3ca086d1832c7adcd9d52f872f8a6b92db1fc98064e2cd17cc7badaef8b9f3b. 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/GBKQU2103504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7593c6868457647b66214f678e3fa4f83b1e4bb3f11769785acbc4e9331c1f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/NLFL72100960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d3154d5a07192940c1c22e8e4eebd2d8d2e18ec14bd17665a5d1f6799a231e. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/NLFL72101139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6176f2719d06f9b76e384ffecd65be9b5fd4fad2e2d29f91e871ffd30cfc24b4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NLFL72200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e68705ba13c34ba1396a45950342d0e269b959339f34e662f01135a161bac11. 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/NLFL72300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fed27ed6937122be12b07dedfe0034a980693f61984b94421b5e8cae09acb8. 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/NLFL72300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba97b545202c68074a650f92f06793641844aa32888357308fd50041119d9c0. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NLFL72300619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9ac83b24ce448eb78a99b22dd8ff939bd6c5aa997f2f513002b5766fd46679. 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/NLFL72400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f5eb3a49651d2d3eb0d721f511098606f7182a12bf6102fb02930a248042f6. 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/BEB682000170.
MY DEMONS (feat. Frenchkillerz) - Zyon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb001e8ea7307ad0372acbf694526b167ba857962493d04f9e362db632eeb98e5. 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/QZTB22340942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af378452f56cc1f5c1cc89696469a64875fc006ff371cf98e37ec5c9191a19e. 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/NLH2L2200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b13942cab8056a4a925610d2a7ce867d2dc3bc82a03c925e734e6b60b2716f. 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/NL7EN2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb001e8ea7307ad0372acbf694526b167ba857962493d04f9e362db632eeb98e5. 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/QZTB22340942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e7768109ce40e41fdb10b57890ba1e8051aff0cc47d1148c8535acf683929. 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/NLG3W2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f014834f7613f837f6e44dd081eeac2be820f9284e47f0654ed90072a2906. 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/NLS762300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd1343d4ef562e88f93aa29e5084f8406c97c32cba00acf9293199e0c0ea355. 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/NLS762500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af378452f56cc1f5c1cc89696469a64875fc006ff371cf98e37ec5c9191a19e. 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/NLH2L2200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607e0f9729711cb0650d88b266830e9ad15e480d447c35ad66dcd2ca1af14402. 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/BEB682100227.