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 0xc7636a1e2232ed18d4332c4e6d2f645a36f9fd3c507c98a2dc2831d7d9f8713b. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f92c14c-337d-478e-8937-faef00d20984.json and https://artists.proofprofile.net/proofs/artist/1f92c14c-337d-478e-8937-faef00d20984.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 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 0xb11b9e8ea33373d781dccfd0b589f8f20a46b6106866beccc54653da294d9fdf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMFMG1313527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895c0a32b802444dffdfa82bb220b5c0a9ccf9e3961108449aa5fb07847af592. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6MZ2221920.
Koili Kahuke Aadhi Ratiya Ho Rama (Maithili)
Baja Do Dolly Singh Ka Gana Diwana Maiya Ka Jhumega
La Chalu Mandir Bulet Par Piya (Maithili)
Saij Gele Sab Pokhair Ke Ghat (Maithili)
He Shivshankar He Gaurivar Kholiyau Nazria (Maithili)
Baba Araj Karai Chhi Shivshankar Tripurari Yau (Maithili)
Baje Avadh Me Bajanma Ho Rama (Maithili)
Mithila Hamar Bad Mahaan Yau (Mithila Varnan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd362459d8a4a95bad3b5712ebebce624d7d166f17cdef136035ecb0919663313. 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/QMFMG1324630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240c4d544b68830a2072d80e5eebe4cecaebc7ddff421146d76dbfd6ef569848. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QMFMG1324824.