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 0x18dff49298a4c52b2e4a1f8c20efdb6a6e3cb470337a083cafefe643dee7394d. 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/c6c8fddd-371c-4a0b-9887-245b0af8c5fb.json and https://artists.proofprofile.net/proofs/artist/c6c8fddd-371c-4a0b-9887-245b0af8c5fb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
EXPLORER SERIES: LATIN AMERICA - Mexico: The Real Mexico in Music and Song
EXPLORER SERIES: CARIBBEAN - Trinidad: The Sound of the Sun / The Westland Steel Band
EXPLORER SERIES: AFRICA - Ghana: High-Life And Other Popular Music
EXPLORER SERIES: AFRICA - Nubia: Escalay (The Water Wheel): Oud Music
EXPLORER SERIES: CARIBBEAN - Island Songs and Dances
EXPLORER SERIES: AFRICA - Zimbabwe: The Soul Of Mbira / Traditions Of The Shona People
EXPLORER SERIES: AFRICA - Animals of Africa: Sounds of the Jungle, Plain & Bush
EXPLORER SERIES: AFRICA - Burundi: Music from the Heart of Africa
EXPLORER SERIES: INDONESIA - Bali: Music For The Shadow Play
EXPLORER SERIES: AFRICA - East Africa: Witchcraft & Ritual Music
EXPLORER SERIES: TIBET - Tibetan Buddhism: The Ritual Orchestra & Chants
EXPLORER SERIES: AFRICA - West Africa: Drum, Chant & Instrumental Music
EXPLORER SERIES: EAST ASIA - Japan: Traditional Vocal & Instrumental Pieces
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 0xdf5b0a30dcb849fb926cddbccfc7866c80b2470235501c17601e8098d13a029c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607202 — a six-check JSON result.
Edo Lullaby (shakuhachi, shamisen, biwa, 2 kotos, bells)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac1166826a7792a5ea855aeaa7a1a6f56bf0b68e2c52acb23b8e62b624edd5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607204 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa504b89b28c009e38a3928f07669de1add4064ece92f286dd94d7badfcd742. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607207 — a six-check JSON result.
EXPLORER SERIES: CARRIBEAN - West Indies: An Island Carnival
EXPLORER SERIES: EAST ASIA - Japan: Shakuhachi: The Japanese Flute
EXPLORER SERIES: AFRICA - Zimbabwe: Shona Mbira Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc79b0a36673f6818f2dca3e5d845e4db480830525ca0323fc4ec79c2a331e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10271001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7a4acd33e189160e947de80042119af3613282c54c9bbeccaca2d7e919df1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10271002 — a six-check JSON result.
EXPLORER SERIES: AFRICA - Ghana: Ancient Ceremonies / Dance Music & Songs
EXPLORER SERIES: AFRICA - Burkina Faso: Rhythms of the Grasslands
EXPLORER SERIES: CARIBBEAN - West Indies: An Island Carnival
EXPLORER SERIES: TIBET - Tibetan Buddhism: Tantras of Gyütö
KINGDOM OF THE SUN AND HIGHLIGHTS FROM FIESTA OF PERU
EXPLORER SERIES: LATIN AMERICA - Peru: Kingdom of the Sun / The Inca Heritage
EXPLORER SERIES: EUROPE - Bulgaria: Music of Bulgaria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943c3fb946896d102e8098b88a9049cb6c890e81118d7947a634da5442b684f4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200069 — a six-check JSON result.
EXPLORER SERIES: EAST ASIA - Japan: Traditional Vocal & Instrumental Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b0a30dcb849fb926cddbccfc7866c80b2470235501c17601e8098d13a029c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607202 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266d8082ab3ba04d764c6ff2510854281140b2927946d14dff7cbee086af4f36. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607203 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac1166826a7792a5ea855aeaa7a1a6f56bf0b68e2c52acb23b8e62b624edd5c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607204 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa504b89b28c009e38a3928f07669de1add4064ece92f286dd94d7badfcd742. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17607207 — a six-check JSON result.
EXPLORER SERIES: CENTRAL ASIA - Iran: Persian Classical Music
Village Music of Yugoslavia: Songs & Dances From Bosnia-Herzegovina, Croatia & Macedonia
EXPLORER SERIES: EUROPE - Bulgaria: Village and Folk Music of Bulgaria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126c2275d58f1018d5e09f919e16c85aadbc00ca2062edfbf6c82a1c5c318ae2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18819507 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ffa8cc0457d14ccaac37919cfa045d44a73c20cc604d0955a012d6282b253. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18819509 — a six-check JSON result.
EXPLORER SERIES: EAST ASIA - Japan: Kabuki & Other Traditional Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37e814453de3b4c4f1968ae96044aa6a8fd35548920f3cd3ec48e9879bc11dd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18008401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f7299eb9f32a7fd7f9b75128e5c24f85220ad285497d6b4b04019d751188d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18008402 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c1d3e172b52fab31c3f1daf5e24c31fe196237367c688b8670dadc87fff50. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18008403 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9b81d9b7feb8d21a1e38c0e78ab79c6de9466d9fcddd080e4bb35882be8764. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18008404 — a six-check JSON result.
EAST ASIA - Japan: Kabuki & Other Traditional Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37e814453de3b4c4f1968ae96044aa6a8fd35548920f3cd3ec48e9879bc11dd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18008401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa281f7c736a68ec53e795e76fef3ee8681757fe9e8a64a665320fabd64dc07a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10001600 — a six-check JSON result.
EXPLORER SERIES: AFRICA - Music from the Nonesuch Explorer Series
EXPLORER SERIES: AFRICA - Burkina Faso: Savannah Rhythms
EXPLORER SERIES: THE CARIBBEAN - Island Songs and Dances
EXPLORER SERIES: INDONESIA - Bali: Music From The Morning Of The World
EXPLORER SERIES: SOUTH PACIFIC - Island Music
EXPLORER SERIES: AFRICA - East Africa: Ceremonial & Folk Music
EXPLORER SERIES: INDONESIA - Java: Court Gamelan
Gending: Tedjanata / Ladrang Sembawa / Ladrang Playon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2187c7cde14298c43201c4073146db2b02d48968be1d3347bbae1f5e55684ee. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17104402 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e0e3afdf32b693ae25ab0a03c5f86aae36da11b701d95ef3a8d9a4a0f1264c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17104404 — a six-check JSON result.
EXPLORER SERIES: INDONESIA - Java: Court Gamelan, Vol. II
EXPLORER SERIES: CARIBBEAN - West Indies – An Island Carnival
EXPLORER SERIES: INDONESIA - Bali: Golden Rain