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 0x48d5dcd0c2ccd736578ced5373b620d80c3069e8e20cdb6b982f55e5d6da314e. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b22b2f6-af49-4c15-b8f6-5ccfda83a210.json and https://artists.proofprofile.net/proofs/artist/0b22b2f6-af49-4c15-b8f6-5ccfda83a210.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Legend Of Maula Jatt (Original Soundtrack)
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 0x88789853f7e6593a2fe54f87ad9936b2e0e66c0fe0210fd72cf83afc41402d67. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USL4Q2250605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0519ef0bcbf9c2d0e6e05abd83bb635205071f85752f92619907832b0ce92a. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/USL4Q2250613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c454e7a174e66ae78ac2ad99f126585e49b31ab386872a9a226124096f5e1da. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q2250614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc21dc617c18fac01c592ffa0470fbc4af11c857b1c3269a1a9c3ff53fe98ff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4Q2250617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1e3b4d44f123e5578d64b3652df6abd7d6362af0582515cc509f635c1998ff. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USL4Q2250620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232cc542b10ba1fef53e0c0704c5d10e4b4d9cef6ad72dfbf746a2ddaa5a15f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCAHW2459782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109ac6623373b3f746f3e25bb7ff5c11484a78f5b38ba346d8aaada571ff1180. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZFZ32052727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2393162dddf5c540ac9e14135c5271834b73f359b6879bc05d2a3d9668dd0bf. 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/QZWDW2362064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2599e459d9a17ea01ddb14d88978fa7ead9c81c98eecefdbcf79cbc71e929325. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZWDW2362065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2aeb485acd8d3a7573ea96f78bc88009dbffbeb690351d6e25f857e721ac13a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZWDW2362066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05783f98e8b033dff61214389f85951324262dfddbd3ce0ec451f9a16dbd1a14. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZWDW2362067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a0b5ba86321df4c58795c65a0806527924fd1b2a4c15a71ecc971f757b43ad. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZWDW2362068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e93c9c3d7b79cd7bfa32080fb91bbd0dcd0bebd432fb9f8add1051e074fe688. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDW2362069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2fa298a40d6558e753e18ca85d5ea3485677729778907382e57471855b7d24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDW2362070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9ae937da3c780f42f7d342b186e87355df191f5865b28d32319b8164d62bfa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWDW2362071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc154807f60dc0019830486eb961df52d424552b5d6e6cf3447c50b82d8f9e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZWDW2362072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5399c6c33dd5887f9df186f6afae7e02a213babd4ef5c34baad1693f7915df. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDW2362073.