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 0x24783d805411dc8487b703de1da0d4b99ad5f0e36375b03a4d90bd0bb25c3a23. 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/dbf3609c-67cc-460b-a42c-5d0b549fe47a.json and https://artists.proofprofile.net/proofs/artist/dbf3609c-67cc-460b-a42c-5d0b549fe47a.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 0x5b3a0d31a94ef17317f2cfd8971b9d342d25cfda878b1f254700c12e5c8cec6d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/INJ252100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f920025043eb444559866a054324c27c7d9a2193ea08ca8ee246a2484b9434. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/INH102301591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958c2adae5ff2edf3208371a10acde3c68b66af1c877ea401b417526bd193eb3. 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/INH102305383.
Zara Zara - Bengali Version (ChillWave Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b84f60e023e69e2384f64ed051ff25d6b4eec92933917ec561fc705575766b7. 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/INH102308459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95bbf0d28a850e92840a08c25d2b77991084d91ff3f66576a664be519c928ed. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/INH102308537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9219d231b7f14a48aa2dfa25e7649d633bde4d75d6072958b81d83d1fe56f32. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INH102310675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ed88d5ab143d0518cc481794f2073b3e2ccfffc78fe0c706e409670b39a48d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:04:05Z), 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/INH102311697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a6c17523cc980e9f7bb1fe155c01e0c004be436c8e6ebdb5e277748b1f992. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INH102311992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30144d6b4a8c092758777428708e833cc1ee7e26a74476e41dba2c6c15e2329. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/INH102314829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd820dc890048a3a0f494bf557a720c07d4fce3b3fc701ab563e7885ee864b2b1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:08:10Z), 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/INS2X2401017.
Pakhider Smriti (Orchestral version) - LoFi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358a85d3614e5f7c453692db7a10031a2039899349c09f01268657a73a1f6f48. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INS2X2400244.