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 0xd28bd35f64fe82209323e5f5804c17dd3612f25b9d084697b0476146f3a9683d. Chain 2 (Bitcoin): anchored in block 953999 (2026-06-16T20:20:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31395160-6a75-44dc-93e5-550f8d3299cc.json and https://artists.proofprofile.net/proofs/artist/31395160-6a75-44dc-93e5-550f8d3299cc.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 0x134b0256906b4779b2a84d9f35a1730c0dc87f8d0cfbad7b60a51b5fc641aa9c. 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/INSF32401767.
Ei Lachak Pachak Chole O Tui Kotha Jachhi Go
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0de25909f3d707574f8f29b57777cc5dbaf82575e0be2b1d807a4700e81c973. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/INSF32508437.
Upper Ta Sukha Bothe Bhitar Ta Bhija Achhe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d36e4c24b1aa983f0fca4a378b7313a06f6ab52f11cb6871a7f9b3bc89d894. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INS7A2476234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c88c56e3a4f7758721f08a7b551d7e899aae1c19c8f51ff137bc7672db6bc9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:53:11Z), 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/DGA092353521.
LAL TUK TUK PALASH BONE FUTIYARIR BAHARE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f683ae1a55261125e3833c77b89d1b1e2143b97ecc2bbbad0f723066336b00. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA092396708.
Ami Kola kore Aj Jane Leli Tor Asol Chehera Go
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406c7883ff75e73550724f7a289839f89d53e0e73bc3e1db8618b430c0d1368. 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/DGA062476100.
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