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 0x91d11f8d67dc6d90a01467858be367fd4b09d4656db4bb238b2c5d8f317d6e1a. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/914c3275-e7e2-4d43-bc96-fcc4662cdba7.json and https://artists.proofprofile.net/proofs/artist/914c3275-e7e2-4d43-bc96-fcc4662cdba7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bijali Tohre Dada Ke Kareja Pe Giri (Bhojpuri Song)
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 0xf47ea1648af7b47794e6b54c5803cc39d15faea083a68300c8c0d0d0d9437f72. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/INE182215413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b7cce22545af3a6d87a2e4a6bb68301d61577329485dda8732d20a009192e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ING642306887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e93afdcc55c79feb11368d5c9d41e305a7b8650d3cf872373d58c16de573f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ING642307828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701248b3f910edeff24b193c8e06e3a95a937809669caeb0d18e24c894fcaa7f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ING642402708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f300340ca91aab2a210a05628292dc0bac5f0be718311f7febb34f5ceb0f634. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/ING642421029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a49965404e59849c9389bfc1a5d3dc61e56a96f083f9bf92fe68ea035454b4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ING642424086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c62c7cd1dcb21f737b48c7371ea2a94879a2bea70dc23b74cdc9becf68676d8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ING642424462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96616eb0ddc01c5b49794d609782051d2cdfa117ea633815f29390fe1f7f4455. 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/FRX202532410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73193d66f3a6295eb76ad61c59f4d21fb53aaeefdeeed120fc65a738725350cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ING642506234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0249cfe4172b817e18f2a5ec1e0c9ef7a32ac48be12f314c00f47e478922d9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ING642506386.