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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396c5456c4d8b52fab8b055a4a7b2f4e412622f897036c5a5281ca647f1a1835. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e01e0f7a-2baf-431e-b467-9fc6687e2c40.json and https://artists.proofprofile.net/proofs/artist/e01e0f7a-2baf-431e-b467-9fc6687e2c40.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d778a4dc686131e150aa6dba55271c0f8a740d92830def70cbb1eaf1a58f4f. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:50:33Z), 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/QZHNB2364487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11de7cf6bb5017df23a688f7f5000d96b4d1ab1714e1e5fba9d689259382ac6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2364214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f98044769674f268717d4b7d5c9c608081e2ad9331ae740acc88c9743625bdf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2161618.
احمد ال شملان - الا القطيعة (حصريا) 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d64b31f1e7cbdc55284c5862f12a07f9fb40cb45dfdafcd230ec34a9e70ac0. 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/QZES72474301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3e2abc475487e80a69fcdd2a95f28026f8337278d710465058d9d889003662. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6Q2472733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae73e906f117eec4013f6bc7d9c816ed312e861aeca5339934c3f0b49d24da. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:02Z), 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/QZZ782491078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b749c632b920b6d6462e5fda3a6a859a57ec4242ceff0da6945f97aaa8acae. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62529613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbafc0fe2288fa53bdfc084922db563b9a1cac79476a14f9f1da0cd7f2772eb7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFV2550750.