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 0xea5e380f19efa00b8ae63d937cd37d870f4d475ef505d019efa162ddaa71acbd. 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/7bc4e445-ef8d-4642-9f06-41d5c024b35b.json and https://artists.proofprofile.net/proofs/artist/7bc4e445-ef8d-4642-9f06-41d5c024b35b.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 0xe72025c09f6e3da2cbe0d374fea796454a04d7b84fb60b3efda3780cd431a284. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAGN2264631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c8aa2507045f0bdf4646f34275e96e35d80b583b6dcb4c28d3eb0298a26115. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:20:16Z), 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/TCAGZ2355726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674cff9740541de0a1cb580a343c276a734acbcc35a28f1123f5034c3d5c7d36. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHD2300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5de480a228b59c26d80a9f4ad369b57c77ed4ebad1c8d8d348df06c90417eba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAHF2344456.
Bhole Tere Dar Pe Chale Ayenge Lofi (Slow+Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea6b744164787dcaaeec1c2713da173310842a8cd44e3357f412196f7c4e2e5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:32Z), 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/TCAHH2388266.
Bhole Baba Pahadon Ke Raja (Lofi) [Slow+Reverb]
Bhola Mera Damru Baja Ke Chala Lofi [Slow+Reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dd1fa569bd13ab4569075a5a787925ce37e86af4c6c885913068450edf4cbb. 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/INAF22500013.