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 0x8f095e10bc26d76c87a03fc892501db60f82f0f8820f1bd6c89a66b6c819398f. 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/d6b2b658-f438-4738-be9b-7bff24e20519.json and https://artists.proofprofile.net/proofs/artist/d6b2b658-f438-4738-be9b-7bff24e20519.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x5a6dfec2bd6b9fd845c71aadb79e1df056ad0fc2d26c5e8e1a65da3e577f572a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262103003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7da04bed3144c81a5dad90e06af87307b55aba967e6ead5387147057c831116. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262202280 — a six-check JSON result.
Ana Haba W Hiya Haba Ta3jabni Dik Rach9a
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d10b0a6df07820905175c64a90ff455d697909e904f93e5679ff0c48cf1eeb0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262300131 — a six-check JSON result.
Jamais Nakhser Waldiya 3la wahda kima Ntiya
Sayf 3la abwab (Likidetni derbatni bwahed halab)
Ta3arfini Mnarvi Manedikch l Plage Privé
YalaTiF YalaTiF 3aJbaTha MroriYa Ta3 NiF
Jibouli N9abelha baghi na3raf chadertelha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a24069d908541fe958fa8ed00b52e5cfb77fcb97ef653be8f5f4d7d25803b2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262306620 — a six-check JSON result.
Khalouni Khalouni MatakharboulichfJnouni
Fi Galbi Rani Dayrak Bel Passer Jamais N3ayrak
Cheba3touni Drabi Ya L'entourage Ghi Shabi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcef57ac96714fc6731d52a0f2ba2d76c0534eecd65cf8873543e45ddac8e2d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ662490735 — a six-check JSON result.
Jamais Nakhser Walediya Aela Wahda Kima Ntyia
Kolchi Tbedel Fiha Krahtha Maranich Nebghiha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8868bb9eac40fd01f400ef348d41ff3ad930ab2913446d3df1004f3f777cb9. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262400922 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaeb529eb94d07b050c4457c24b3fe8af5359c95ec70f00b8ad8c6bf02162a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262401015 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8dbf95a1dc7f4ca6765a9f1f34281753d58893047f0b06a07e2e82dee8adfd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2401504 — a six-check JSON result.
Kadbat 3lik Gazana Gotlak Nrofdahlak F simana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3194505384097e3fbdbf277286b31be91f870873213de2f4511af5361ac6f0a3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DZA102401098 — a six-check JSON result.
Ma Tatkasalch 3liya 3andak Machya ta3 Chaw9iya
Ma Tcomparich Rohak Biya w Nta Mjarjaratak Wliya
قاتلهم ندمره لبوهدمة (تبكي مه ما تبكيش ما)
قاتلهم ندمره لبوهدمة - تبكي مه ما تبكيش ما
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92726ba4b6fbf175bf147f35100adcadb6bc4b4635a91e44d5d41b9956e6e5fe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2413687 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb01134d12b0e3a92e9bafc9741c88928f6ec0f3e147dac25d613c646a35fc3f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DZA102401251 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3657e4e438ee6e32f4ccd75ffa03b51837269e3ca93c60c4763b0c7be2f5d444. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5XG2450521 — a six-check JSON result.
يا نصه غي وذنين (تقول مه توحمت على قنين)
كل يوم الكارطة وًالمراية جالولها مايدورش غاية
Les Hommes Takel 3la Ch9aya Guelil w 3ayech Ghaya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83557d7b6b8e508cf6a4ba6b045dbcbd8cf714513d08697e1177bd4c831c1789. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42549624 — a six-check JSON result.
Ma3andich Problème L7abss Yfout Ki Lmnam
Ta3arfouni Sghir w Taghi Ndir Cha Rani Baghi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3acc888a691558672dca0cba89491259d3459fbda42c522bb44e8241d4aa5e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262500743 — a six-check JSON result.
Khasni Haba Aller Retour Bel Grinaldou Ndour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6075bca2f1955e32c498300e0e42e0f739b184438d9af16291097c17b3a6fae1. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DZA102500774 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e8471a58cecc3d74d541be61ef19dd924baa927acbc8897f967c0109579c2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452521742 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea13fcee697193ac0993ff900a9d88439370a523c4128a2637e1b487c77dbb. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EGA262501424 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14540a4fca5f6e382d0c8638afa2ae19797dd0c6b10c9999ec7c3ca6b36c4016. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA052506890 — a six-check JSON result.