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 0x08b5dd6aa031772d4206b1bfd9454422a2801885f695b298517ae26995a1a5bb. 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/30dd4ae3-5d83-4cd9-a4ce-60670577d756.json and https://artists.proofprofile.net/proofs/artist/30dd4ae3-5d83-4cd9-a4ce-60670577d756.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 0xd62fbd7012d91dc9de3af89437c291252541dad6a1697be6768ef12b99d95235. 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/LBA0H2004227 — a six-check JSON result.
Saheb La Tdawr Saheb (Kolaha Saret Aqareb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ce9c9547e67003b4a46de27a7d01cb8171679cf15e7983ebb5582dbefe567. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2004229 — a six-check JSON result.
Wahed Mn Khwani (Ant Elmaragel Takhed Drosak)
Ana Wala shay (Ana Taaban Bhaldni Allah Ebtlani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dbb6cae2b814c4cf9c5ef1f0feaa5e095530a2c952f942bc71c0f5948fc035. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/LBA0H2004233 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04207e141dcee3df8d8d7c539f05b3aa353f4d0d516a96af1bbcca34aed5a111. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/LBA0H2005283 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba0303496b355b4224335b74b927a45194c946bf38a675eb9b62ebef60e8b70. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2005289 — a six-check JSON result.
Tarako El Deyne W fallo - Khano Bjafa - Waynik Ya Emmi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f29930467cd0a1fc9d49e0034d18498de20c9534ea83e05208730eccfb051c1. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/LBA0H2005284 — a six-check JSON result.
Bil Gharam - 3ozran Habibi - Bahebik Wa7ashtini - Safar Habibi
Bil Gharam - 3ozran Habibi - Bahebik Wa7ashtini - Safar Habibi (Cover)
Amant Allah - Al Ras Daym Marfou3 - Ya Abona Ya A3z El Nas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9652e7a78c3aae9d30807853e8b1a2d50fdbe97a943b071e030ede97e9793b57. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2005286 — a six-check JSON result.
Amant Allah - Akha5o 3ashiri 3ghasb - Solefli
Dounk Ma B3ish - Garbi 3a Albi - Nensa Al Madi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04b1d1caf0a8cc31db547b8755f4c2135e0cf91230033fc69e74c6d6649715. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX452276080 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f1360e0b76e91bf2e983f6bac94f1c6a43a407f11bb97fd42238a796c9d4e2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2005287 — a six-check JSON result.
سـد وسـنـد كـل البلد تحلف بي أسم خواني - أحفر قبر أقصف عمر
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe5f54eb50c79daf29100302ad02b25fe59384a7c75d78992b71262faf89766. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2010541 — a six-check JSON result.
Árabe Sofrencia - عَدِي زَاغَة وَ أَنس أَبُو سُنَيْنَة - غَمْضَة عَيْن - لَمْ يَعُد و لَمْ نَعُد - Arrochadeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36e9d29ed4b0b491e3d0bf1a51720b558bb984fa695a97849ae4d8cdfb9476. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2012627 — a six-check JSON result.