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 0xf85201fd783f5eaef4828409e9d0cacb6d1e43548ffcbc35b27702d0f97ba07e. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14cf7b6d-09c1-4b45-8a70-9c8a31a101a9.json and https://artists.proofprofile.net/proofs/artist/14cf7b6d-09c1-4b45-8a70-9c8a31a101a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ondhe Ondhe Bunder (Jaipongan Banyumasan)
Banjarnegara Gilar Gilar (Jaipongan Banyumasan)
Pangkur Comal (Lengger Langensari Vol.1)
Pantai Logending (Lengger Langensari Vol.1)
Renggong Garut (Lengger Langensari Vol.1)
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 0x4a802736208205a398b051c88cf3afae9b719d16c7caf84a108fd9f7809fcef9. 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/QZNWS2275087.
Karembong Kayas (Lengger Langensari Vol.3)
Sambel Kemangi (Lengger Langensari Vol.3)
Renggong Manis (Lengger Langensari Vol.3)
Bendrong Kulon (Lengger Langensari Vol.3)
Lengger Langensari Seni Calung Banyumasan
Lambang Sarikenyol (Instrumental Gending Jawa)
Ladrang Pangkur (Instrumental Gending Jawa)
Bendrong Kulon (Instrumental Gending Jawa)
Gambyong Pare Anom (Instrumental Gending Jawa)
Ayak Ayak Solo (Instrumental Gending Jawa)
Gending Srepeg (Instrumental Gending Jawa)
Gending Sampak (Instrumental Gending Jawa)
Menthok Menthok (Instrumental Gending Jawa)
Ayak Ayak Slendro (Instrumental Gending Jawa)
Kijing Miring (Instrumental Gending Jawa)
Lumbung Desa (Instrumental Gending Jawa)
Lesung Jumengglung (Instrumental Gending Jawa)
Sekar Gadung (Instrumental Gending Jawa)
Budhalan Umbul Umbul (Instrumental Gending Jawa)
Raja Manggala (Instrumental Gending Jawa)
Harjuna Mangsah (Instrumental Gending Jawa)
Gugur Gunung (Instrumental Gending Jawa)
Talu Pambuka (Instrumental Gending Jawa)
GENDING BANYUMASAN NYAMLENG (SINGGASANA MUSIK)
Gending Banyumasan Nyamleng Singgasana Musik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8f811b7d2e5bad01de8d67f2e9410a5e98e0903ca18eac4911be596cc99048. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2167487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0244b2ea0f8ac1f2a53896584f658d7da09e4e2ffd09c40510abe9bbb05386dd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6G2167491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa68248704acce6a4cbdb05aba6ec0d498687a1814b35532dd374e9a2b7d56. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2167492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9014222d3edc7cfa75ec061f96dbb80e464854139985ce94356f9ba03fb80486. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2167494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e0ccc64845957be02909c8d5bf37c7e99a940c3ddcb3b7f8626709caca13bd. 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/QZK6G2167495.