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 0xf60b9de8cc9a47164d38ee8b65ed795352f1666b98a84add41b8f4c941ac6555. 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/94d45221-cc50-490f-8aca-4276cbc7c20c.json and https://artists.proofprofile.net/proofs/artist/94d45221-cc50-490f-8aca-4276cbc7c20c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Houari Dauphin et Cheb Abdou - Liyeh Liyeh
Houari Dauphin - Je Pense a Toi Je Pense
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 0x19cc97ffaef761c2c6a1ed181968b80dd61db7618d69ec06a223b0c945bf7612. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FR8GV2536290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51eba524038f0fc5bc85975a98411e723d50691bc420920d665dec1586cef6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR8GV2536340.
Houari Dauphin - Chaal Nebghi Nkalache Omri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fb75b46096d39d30515f4c3838756739ed1b08cbbab2f21870978f81e5bf3c. 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/FR43D2300826.
Houari Dauphin, Fiha Dauphin, Raï masters, Vol 11 of 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a10ed66a53ae0658244796930d3b772ca4eca6fd55c299d9d8bccb3841db1b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR43D2300796.
Yahiya Gaa Li Hrag / Yanal Bouk Agelbi (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8924ffbb4775741287aa462b21e04bd98ed493702036998bd1ee484fe1bf1b36. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VGA011015339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd9df63fbc3f92207f0aa672d49cd5a87cceeffd90a785e510b80979628e4eb. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/VGA011019511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07ab6cb89be0528d3a7c8e9f38f4c7e4c49e8ccca3db899e74a45c4a9970ae5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/VGA011019516.
Houari Dauphin Best of Collector (33 Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efe2c424fdf9373a1792b3c6060b44fa436bc872d7cf1f74084a15d90144ea5. 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/FR6V81502626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e089b0464cf6dd8992c5ee53da401fe247c3adbc2fa07db9d38ee2f515d67. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM7281753519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa311a9054491e1d539ae371cf50ec8bc60ad53fa1249ff82b18da2acea74781e. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/QZK6M2072141.
عطيتك قلبي ما رحمتني (DJ Ismail Bba Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3068b72df2a5db61b04b9d64e131851586493f094c4f0e2e776365342a8b6108. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZWDW2202634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592549a3c898d9a6ea5f6b2d375a39f6e297a93d5c234a3f213679b6a830332d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CH6542233410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefbe7302f408081c2244dc87dc9f3563f8329869587bc4deab234e5dad0ef25. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR2X42485509.
ana hak dahka w farhan w hya tgoul rah aliya nadman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8ed5aa362318fa7caa8b9930a4b41d85b74692e7a49cdc029389c18b73a6ac. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE5XG2500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a8388fe676335b42fdcd88a90380c59cfe3bd763a54152f138cf53573954e8. 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/FR2X42527903.