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 0x638dbadc18ad6b1c77341ac63f6978a3be19f5bce30ce0e808180f5b2b1d4d57. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea28b7db-aee7-46b9-9fde-3ce27357e7f9.json and https://artists.proofprofile.net/proofs/artist/ea28b7db-aee7-46b9-9fde-3ce27357e7f9.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 0x96fff43f3a9b2b5b2fd4a4782e00687141146ff2f4cb865cf46bd5acaed80b12. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QM6MZ1717409.
Sanjeeda Moseequi Jae Shaiqeen Laye Yaadgaar Tohfo, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6635c5934fbc2f609bd46466f3aa9f28eee268cd1b0bd54d91d2e08a04888e88. 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/QM6MZ1724174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29436744e04cdcfb0c9ad7441f5753a9dea89968cbb69dc86c7d8e783d35439b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6MZ1724121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b72ae8f7d45489f12b6a075fa7b05128f4a9ce3f9dbd2d766156e38fd6d9df. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR96X1500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f5549a6ffc9de68cf13b57df7ff3c9f8a81f6797c578c7b65b23a4401b76a9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR96X1500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff4962cb99bf46e849b4972d29fc592374fd882c98021f900497f45da5c0ca. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X1550487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc76beedd8af47f63c8b28d0f48eba4349944b6d575bc9903c8825120854f5bd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZN882230395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057b9a7ad922dc12026258cba719bb3489bf404a5c7063d77e96faaea5bb9dc. 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/INV582217579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a612a94b98aa06a514dcd0c4ebd4359d09b34b431319439a9bda167c035b3c. 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/PKA0A2400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb32e3f11e393cecfab96f414841772483f5c0dccf2f92d4dbccf44b7c5131ab. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PKA0A2400566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdff29dc2009a95828b8686bbb271daf5ac43db27c77ed2f000bc32315817d1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/PKA0A2400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0184079324b1e69510aec40c46089df71b95526919e7435a8acfe962a662e416. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PKA0A2400681.