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 0x874504c452cf2864cd2186a4cb14f67048cf95d4fed4734aed473eb68bdab5f0. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e42303c-dab2-499e-a950-578d6dcb363c.json and https://artists.proofprofile.net/proofs/artist/1e42303c-dab2-499e-a950-578d6dcb363c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chumma Lihale Pawan Raja 3 Baje Bhorhariya
Azamgarh Ke Mela Me Heara jaihe (Bhojpuri Song)
Tora Yad Me Pagali Piytani Sigret (Bhojpuri)
Chadate Fagunawa Gumhi Ge Chauri (Holi Song)
Naihar Se Sasura Nai Jaibo Re Jo Re Koirfutha
Aso Kala Dhani Chhath Ke Pujanawa (Chhath Song)
Kartik Chait Me Chhath Puja Karab (Chhath Song)
Ropani Karwai Ke Chal Jaiha Kawar Uthai Ke (bhojpuri Song)
Baba Dekhi Na Hath Ke Rekha Jan Badi Kouna Lekh
Jab Le Hili Kamariya Tabale Mili Nambariya (Bhojpuri)
Ugi Aadityamalchhapara Ghatiya (Chhath Geet)
Kathin Hola Novami Ke Pujaniya (Bhojpuri)
Mile Khatir Tohara Se Man Pagalail Ba (Bhojpuri Song)
Hamra Se Payar Kaike Gailu Bhulail (Bhojpuri Song)
Bhatar Light Band Karke Dalta (Bhojpuri Song)
Daaru Bina Mud Na Bane Bhatar Ke (Bhojpuri)
Suna Raniya Hamar Ham Bani Redi Tohar Banela Bhatar (Bhojpuri)
Ropani Karvai Ke Chal Jaih Kanwar Uthai Ke
Eke Go Chij Mangwaiya Hajar Ba (Bhojpuri)
Ekego Choli Rangwaiya Hajar Ba (Bhojpuri)
Jej Bhejala Manish Patrakar Ke (Bhojpuri)
Rahab Na Ae Sakhi Kariya Bhatar Pa (Bhojpuri)
Shiv Ji Chahi Mehraru Sunar Ke (Bhojpuri)
Bhag Chala Bhaujai Devar Dhaka Marat Hai
Demi Chumma Ta Badal Jaito Taqdeer Ge Chhauri
Dhire Dhire Maiya Ke Jhulaihe Re Maliniya
Kekra Kekra Mal Chhodalko Jaldi Batao Re
Bhatar Range Dhodi Dewar Indicator (Bhojpuri)
Iyaar Passenger Bhatar Express (Bhojpuri)
Dhodi Ke Bahane Chue Dosar Saman (Bhojpuri)
Javana Ke Chhati Me Dam Ba Chamaran Dabang Ba (Bhojpuri)
Naihar Mein Yaad karke Rowo Hau Loverwa Ge
Chamar Ji Ke Jaati Phir Di Chhati (Bhojpuri)
Dhariha Jal Dan Dan Devghar Ba Abhinandan
Abki Hariyar Hariyar Chudi Lele Aiha Raja Ji
Sherawali Ke Naam Likhwa La Chunariya Pa
Bhauji Maai Pe Chunariya Chadhaila Na Ho
Kha Ke Marale Ba Gul Tab Se Aawatate Hul
Roj Ke Hamke Aadat Ba Chahi Hamke Uhe Ji
Dala Sajake Mala Banake Bhore Tu Aabehe Maliniya Ge
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 0x6ab9c73dad3ac3b62a773b87c2887c9dfb36049f06fc873cf1a338a663595d91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS232002106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa31e0310327ea8ef28a476d0ead742341a6fe5786c4a0a0b0f0a7ae5f19b5f8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS232002073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1f89afc4fe82565bc194985eba10eb3542ac41664b2c02ed640a2fdbfd8875. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS232002065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0746a164138f27ca4fea8ae715f48d0f18fdb0eb6719a9f111b3c58a632b0659. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:28Z), 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/INS232002075.
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 0xa39ee5eac8ce1c0500628314e6e966d479888ed6c4527ef54798116db41a4984. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INS232002101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912062054d1303642b993aed538582d91f6386768311a6f792169345a7f53950. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INS232002105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dde6ca3255f1f7c50ea6648155819cb06a5dfbb0df178ffa51bd1142607f81. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/INS232002110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f095f2137774df9ab8377169184a476a2fdbf93efa88e902d554ab561c9f2d5. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/INS232002074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beff6737ed65d094331c9e5005bab61ecd7328db6407a77493513e8b89bff17. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/INS232002077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01170f6e6769750ea5a746535a0588fa7dc1642d4e6889f79247ea8fb079d71f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/INS232002078.