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 0xd6dd6bcd3aef321f66824063199e051e810703878d0977dabb4714d1812de1be. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/026e717f-993f-44be-bc6e-e77b7f9c0434.json and https://artists.proofprofile.net/proofs/artist/026e717f-993f-44be-bc6e-e77b7f9c0434.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 0xef233650997bfea5ba3baccf0a6da38df617fc0cef6a337afe5793b05acbc6c0. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEO1979756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217e04cbb7330a0ef840bcc372774c8c74ce801c37bfba6b2a27a6b964d374fc. 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/QZK6L2004747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfee70bb15cb5b330d72b817b7e2e8ec31c7ec90a42f65df27d68ca5afbea59. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZK6L2004748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f9b5f3b484d35073b87a0bb97b95452269c69b6bf17ba6e3514499e5d80cdb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6L2004749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a02b7185fa56cbb32f7f2619c6b4a7bf857d53bf7e2431a17cdcb3530cc2af. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2081149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe049584386b56e44ff253b903fa798a62f3b25300d7d0bccb39fdfed21d14487. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZES52125290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8fbafad0b3eb5e48a69544821a26a4a6c31fedb5cae9d4f0c2a2f560b5836. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZK6P2294100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f871c933a6e58ed00874bec6b289d48d9c3d4517bf80f50d49b67441114c69. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZK6K2179847.
Khadsha (feat. Shouly, Blvxb, El Far3i, Edd Abbas, Maysa Daw & RAYAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ee9b2f3ba365572ce55653bca2dce3b243fb80aea4ab1db6f3c44454d87da. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USUYG1383393.
Arab Femcee Cypher (feat. TaffyRaps, Little G Fresh, Rann, Medusa TN, Nayomi & IntoMyMind)
Ego Bil Kilo (feat. Tamer Nafar, Dodix, Illiam & BigMoe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a3ce917699a87b0cb7ebb9273a7f4a00784e50e49aacf6df21e6b40a21f492. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUYG1407200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610650b1c498e79ac7ebdd92594f9bbefd4ab399c033e000f114c466ed235b29. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USUYG1412008.
Iraq Cypher (feat. Kira The Blurryface, Armando Rap, Odd Khalid, Disser, KC Hamada, Alrong, Genesis, Nayomi & EL SEEN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e6f1ce18996fcb965ad78ddef08c2010820a403d2216a32e04f97fcda6a51. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1426907.
Saudi Cypher (feat. Big A, Al Young, Khalz, Blvxb, Dattune & Al9ine)
Saudi Cypher (feat. Big A, Alyoungofficial, Khalz, Blvxb, Dattune & Al9ine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f4f5dd17f8274de781ed65b3372a80ee201836f68540104af92b145c464c40. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1436725.
3AIB (feat. Meryem Saci, Rana, LOPPA, Dareen, Nadine El Roubi & Big Moe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32d50ee5a5f20fb267103a876ffb1a5f1d3a9a6806b72d9663b2767459dff8d. 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/USUYG1447467.
Syrian Cypher (feat. Assasi, Moudy Al Arabe, The Hws, Chyno with a Why?, OBAYDAH, Sarbasst & Rayan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf6b15e5211236dfe0bdfa472454f449bad2f374bf36ee526df1b05c03258a1. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USUYG1455263.
Sudan Cypher 2 (feat. Aidyproof, Tageel, Zeyo Mann, Mustafa Idris, Awab, Veto, Rana, Side Effect, T.A, Eaz Da Bully & Mshakil)
Jordan Cypher (feat. Emsallam, The Synaptik, Shouly, El Faouri, Mahasneh, SalehMusic, Almukhtar, Satti, El Far3i & Mazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c5f6d516c7a995209626f686bf0ab82cb2fa6ee12835f23d9a5ea762b7bec. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USUYG1484909.
Underdogz (feat. Mosalem, Mared, Nubi, R3 رع & Big Moe)