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 0x1d0d8585a3dec28e8b37f2efab55d55b6c26aa7411b0084ea2e9e72689b28be1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5eea040d-fae8-4dfd-8e2a-76606e3ffc4c.json and https://artists.proofprofile.net/proofs/artist/5eea040d-fae8-4dfd-8e2a-76606e3ffc4c.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 0xd8136fbb1beba5681b5c88d115cf1edb76cfe1c4de317da829853e3356ed9cf3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6L2233866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cd2c63611f279b8df4a93fe3065babbc12d4d7408405735483fce721802419. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T13:01:11Z), 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/QZK6J2016598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099cf95d7ff7648fd2be49d7b786dbf7aaa998ad9f21fc76156918c4d8d4eb59. 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/QZK6J2016604.
KHITAAB 2.0 (Farasat Anees Remix Farasat Refix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae3f10391b94aed88d74a28e7d5d3d232ee972bb65495f3bac47bebf978a4f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:01:03Z), 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/QZFZ22228408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae3f10391b94aed88d74a28e7d5d3d232ee972bb65495f3bac47bebf978a4f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ22228408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b942996980f40edfcdd22ddb0b280bf92a0eb0d2ef2c8056376a29c1f12134. 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/QZNWW2234530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c9e2b002139301ec16eb9d0d039a828b294ca5fc22519f56e2b119714b2f8e. 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/QZNWZ2218491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ed7f21c375b3ece1242b42c26be79a68298e7138aeabd144107f54d7a2a3b. 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/QZTAW2202832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec2eaeb32aa81688fd8d8e8826280aed6fe63c70acddc7891c486dfa1b7429f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22390026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20043ff8a4cc7d930a93a6af0f062ba0112abe15dbeab1e87a4c8ee1fad46468. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZMEP2319918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed748bb483eaa547b69dbc6c168849d479fa3c7064573b2f9b8e6eabdcddd437. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52453665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce32a752bb1bef4a885bba4ad11a4e0e1243dfc9d513498205182742a9e6715. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZES52453671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd488d4c2cb7f4545eee3cac35ae139e6153a662afc5357601e13cf5ed700b8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTB62564194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b7e09fb7b0a2e7dde64b44462ae9b19a7ad6602be3fe607c3831f3e3e2aa74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFYX2449640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcde7b7c2741e350998d17f3ce51b751955610a3d7933729e6d70f0c9ff96a8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZES82273450.
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 0x763c1cfb35237ebcac511f3f1a0937a83dd5527398460128eb287812044a28b1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/AEUM72400187.