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 0xbce44915399e039061575342d1a8fdc28485e668bd5f7774273fb38b962495d5. 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/4f858ab8-cacd-40b1-a895-201e6caf48fd.json and https://artists.proofprofile.net/proofs/artist/4f858ab8-cacd-40b1-a895-201e6caf48fd.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 0x26f62d2a0caf264bee207acfd09c8b37aa6546990ccbe041ddf957bfb67e6e7b. 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/DGA0P2454529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a4ac78f8d0083f8099c7b1791fc2f86b109bf83cded8ae445d03895821b725. 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/INF272400967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc913b4c2dd20100ef06f6bd619b17e7516279657c0f951c5160f96d2c892d3. 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/INF272400946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0d3be390d7035429139edd60f1ea9423673938b12a0930dd76d2a5dea0ff8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INF272405507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ec12c2eab2723535c8343ace3376fdee477dac48597b9e1ac725b05de700d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INF272400917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092fa8f2ec95ebbf030c7fa15c45fcdda03070fb2c29e92e4b7e87e01f8c67bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INF272400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502c02057ed419f5d048cc11630853a1161078fdb00c9800e63324908956eb73. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA072490280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b82969a11759bebdf4d86fbe60aed7d76396992209235cf773bd3fe63aa79a. 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/INF272400657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7044e3fb511275ac7eb7fb8cd1344ab6206ea8aae3cf22e263ba20aefea87223. 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/INF272400576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf377923b6df8039526ef25cbc1221a804a7fb05e26170136e3bcbc68bd225f8c. 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/INF272405031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605ee7bc6ae78de85ab879bdf6ee57fa2ee6e91a5c6e1ef107ffd5f3cdf8cda8. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/INF272405012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267bae700e5effa012971bb0d7d6fd1d7e8a64bbf743ff06a57211e048c92a19. 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/INF272405009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d86182959d4fdbd2a645614692c2c9f9e947526511c1f549eeab7f046a0a9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INF272403038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb2d1aa192c747131f8c026a0767b7079876eda1e13c8aa6f459694ea7112c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INF272403037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc79abd4f2004a454549e22a17f96bad04dbe03bd48101812d059c6ac6ac01. 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/INF272403036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281b116876231a3b9516f3d496e20d1a4d7c1866fe55693f2e3b8175fd36a1c. 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/INF272401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fba8b47b49000309b439fd55e6130cb4dca8133b72eca1fb36e3dfdfa9072d. 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/INF272401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144207447045665b918d7e722ac2749c347758d41d403ecf8387d2d6c697cf4e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INF272300995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627682c799316a477eee6798249abe59ea9819bad104900bd7cec446bd8ca50a. 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/INF272300886.
Teri Jhoonti Mohabbat Kali (Kaif Singer SR 1000)