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 0xb0637274c10a9ce21e5d4ce506df70b716b430b744ee2eda745b137bf5a60778. 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/905d10f0-175c-4ac6-beac-8152bd61ac4f.json and https://artists.proofprofile.net/proofs/artist/905d10f0-175c-4ac6-beac-8152bd61ac4f.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 0x5e23d7fae05af66ce01ca9703704910b4649d97a6d6e3889bf55a335d146cba5. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/LBA0H2001905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80328fad194e72038394721009b8922814053eb0ef87ba0f8cd47eff478a0e98. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/LBA0H2001904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68d9e109c3630670a7661ca1771ef47a22757faa132a4aa3b025fe361efeabe. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/LBA0H2002416.
Khaloni Argos Ma3a / Zekrayat / Enta Yali Kel Nas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace2a0e30bcce496ce7473da8e3077fae56880abeac7f3fac0a71756ac88add0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/LBA0H2003078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66022c3726b65a2d2697c2f90d7b632190f653ac2ba9d7ef836572667c8bb81. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2003446.
حلوة وغشاشة - أسمر كاكاوا - على سناني ما رح كز
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024e0afbf93455a9668ea1e3a8cc9465aadc8f6d2538a57e07f5e012cc81714e. 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/LBA0H2005994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327063d2407e69e553566fcedd1e1839fe8199da8c6fd91e8661f1c581aba862. 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/LBA0H2006202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ed2f019beb8023f29eff49e89e3393bcd103a52ffb030a8d54ebc72c5b5a41. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/LBA0H2008583.
أني الميت قلبي - دخيل وجهك أني - حلوة دلوعة كيوت
كل شي محسوب حسابو - بس حبك يبقى بلقلب (Live)
كلمة زعيم كبيرة وأني قدها - أحنا الدولة أحنا وبس
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31097f0fbbf6b6b2c042fdcd031268738b249199f958693834752f428a7855e4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/LBA0H2009446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2127bc45fe3b5de4906a1f35b72e08787ba0f66795878579dfbb43f2fe7bc48e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/LBA0H2009641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95799d23417e9a548405c1a93c0dfc70d83840deef02197091855803640ba943. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/LBA0H2010002.