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 0x01656a3391eb9630b2bc199c93c7b924eb2d974afaaba311f82a512b5ed105c5. 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/a6454a2b-cf00-407d-a73d-e827ac8fbbb4.json and https://artists.proofprofile.net/proofs/artist/a6454a2b-cf00-407d-a73d-e827ac8fbbb4.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 0xdcaf0b57a982bb3e07d6181b37353f1c8a8732c16f46456f207a104d1dae5dee. 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/INM432400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b8b63c110c860a8e8550fb456602efea5b99f95794bed6ea319cfcd7287d39. 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/INM432400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7490ef50aeeecac2b35f7ff1f51f140ddf1333521ea526b27058d76f0f46ad12. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/INM432400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a75b68bf8d431864447cdb500a63c61215d476906300e027e61ab48b9868cc4. 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/INM432400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65f59484fffff986d98e6c8230d029dccfac358f7849169a127225e1a0524b6. 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/INM432400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55360e4308181e62935f5482e52c3c0343bd3bbf1f263cb5d248bfa8f5c8bb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/INM432400104.
Teeja Punjab (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c143f4edb68c0efc83f19ad2860fb992d9d34bac47b98bdb4b228cf49cb7b5. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/INS172104389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857dc2c9dcc610ac4cbf53484d9fef165e873155db091073ec92061621aabef2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/INS172104392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a1d484e15875678c1e494a83d5a6b989a64eb9c0a00415d5ec002a82bf782. 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/INB802000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1763ebc1b0d12d85eba16cf40a55087af8fb39245595e7c57086b5bc4cb4a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR10S1970540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ceb3ebbd73998a034988f6b080610dede1c8702b24d0b1f828365c834b1f0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INB802000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f31ef0e0688ea4056a9d45099fd0859b3afe2e454ed4f4fc3998fd9206dab65. 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/INS182115018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddfe04394c22b3d3ff9c36ada77ec5c978ec652f0a5cd33c5c3087e357fd9ad. 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/INU252309204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc96edd0dcecffab71626d5c29c40abbaf714b8c26c2fa57fdad7294b2b00c2. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/INB802000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c25aa7b324f798d240fa53fd1375855734e0abee8d2cbed2cee68ce382de04. 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/INB802000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db2a0e536e129cbad1945b787c451636ebd78aec861f727a3fcbfb98addd49f. 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/INB802000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34580106b40a3f3a446eade8c767ecf41ffbd154ae001c53ba3fd7d24b1b8e28. 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/INB802000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda214a8e2595a75a914f94d280dfe67c1632f30d31187977b719827fce714581. 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/INB802000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baf2ae0e226a2dd15712423e3566056aff1bf2c6a1b41653d7134f6e85a329c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/INB802000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045714160416f0be4b3809de4e1536a8479604389147995df1f019fd7d929355. 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/INB802000010.